update documentation with release 2.4.2
update documentation with release 2.4.2

geidies/elasticsearch,myelin/elasticsearch,ricardocerq/elasticsearch,ivansun1010/elasticsearch,mapr/elasticsearch,JackyMai/elasticsearch,vroyer/elasticassandra,ZTE-PaaS/elasticsearch,markharwood/elasticsearch,ZTE-PaaS/elasticsearch,pozhidaevak/elasticsearch,scorpionvicky/elasticsearch,sreeramjayan/elasticsearch,myelin/elasticsearch,StefanGor/elasticsearch,mapr/elasticsearch,F0lha/elasticsearch,mmaracic/elasticsearch,LeoYao/elasticsearch,jbertouch/elasticsearch,ggchangan/elasticsearch-mapper-attachments,andrejserafim/elasticsearch,C-Bish/elasticsearch,rhoml/elasticsearch,mapr/elasticsearch,fforbeck/elasticsearch,henakamaMSFT/elasticsearch,shreejay/elasticsearch,LeoYao/elasticsearch,HonzaKral/elasticsearch,kaneshin/elasticsearch,markwalkom/elasticsearch,nezirus/elasticsearch,PhaedrusTheGreek/elasticsearch,henakamaMSFT/elasticsearch,rlugojr/elasticsearch,trangvh/elasticsearch,gmarz/elasticsearch,spiegela/elasticsearch,mortonsykes/elasticsearch,dongjoon-hyun/elasticsearch,palecur/elasticsearch,rhoml/elasticsearch,spiegela/elasticsearch,vroyer/elasticassandra,spiegela/elasticsearch,gmarz/elasticsearch,elastic/elasticsearch-mapper-attachments,alexshadow007/elasticsearch,sneivandt/elasticsearch,polyfractal/elasticsearch,winstonewert/elasticsearch,a2lin/elasticsearch,IanvsPoplicola/elasticsearch,fred84/elasticsearch,artnowo/elasticsearch,markwalkom/elasticsearch,snikch/elasticsearch,gfyoung/elasticsearch,zkidkid/elasticsearch,kaneshin/elasticsearch,winstonewert/elasticsearch,nazarewk/elasticsearch,bjorn-ali-goransson/elasticsearch-mapper-attachments,scottsom/elasticsearch,maddin2016/elasticsearch,HonzaKral/elasticsearch,scorpionvicky/elasticsearch,brandonkearby/elasticsearch,wenpos/elasticsearch,elasticdog/elasticsearch,mapr/elasticsearch,awislowski/elasticsearch,nknize/elasticsearch,robin13/elasticsearch,rajanm/elasticsearch,jbertouch/elasticsearch,wbowling/elasticsearch,girirajsharma/elasticsearch,ivansun1010/elasticsearch,avikurapati/elasticsearch,ggchangan/elasticsearch-mapper-attachments,obourgain/elasticsearch,kaneshin/elasticsearch,rmuir/elasticsearch,liweinan0423/elasticsearch,jbertouch/elasticsearch,dongjoon-hyun/elasticsearch,tebriel/elasticsearch,davidvgalbraith/elasticsearch,dongjoon-hyun/elasticsearch,scorpionvicky/elasticsearch,awislowski/elasticsearch,robin13/elasticsearch,scottsom/elasticsearch,ESamir/elasticsearch,camilojd/elasticsearch,jchampion/elasticsearch,C-Bish/elasticsearch,LewayneNaidoo/elasticsearch,njlawton/elasticsearch,Helen-Zhao/elasticsearch,jpountz/elasticsearch,rmuir/elasticsearch,glefloch/elasticsearch,girirajsharma/elasticsearch,markharwood/elasticsearch,Stacey-Gammon/elasticsearch,GlenRSmith/elasticsearch,brandonkearby/elasticsearch,IanvsPoplicola/elasticsearch,Collaborne/elasticsearch-mapper-attachments,scorpionvicky/elasticsearch,PhaedrusTheGreek/elasticsearch,mapr/elasticsearch,strapdata/elassandra5-rc,rhoml/elasticsearch,gmarz/elasticsearch,xuzha/elasticsearch,uschindler/elasticsearch,bawse/elasticsearch,markharwood/elasticsearch,umeshdangat/elasticsearch,nezirus/elasticsearch,yanjunh/elasticsearch,nezirus/elasticsearch,masaruh/elasticsearch,JackyMai/elasticsearch,clintongormley/elasticsearch,MaineC/elasticsearch,gingerwizard/elasticsearch,rmuir/elasticsearch-mapper-attachments,nilabhsagar/elasticsearch,obourgain/elasticsearch,gfyoung/elasticsearch,naveenhooda2000/elasticsearch,fernandozhu/elasticsearch,LeoYao/elasticsearch,mjason3/elasticsearch,C-Bish/elasticsearch,scottsom/elasticsearch,Helen-Zhao/elasticsearch,a2lin/elasticsearch,rmuir/elasticsearch,obourgain/elasticsearch,dongjoon-hyun/elasticsearch,mjason3/elasticsearch,mohit/elasticsearch,bornemix/elasticsearch-mapper-attachments,ESamir/elasticsearch,markwalkom/elasticsearch,JervyShi/elasticsearch,nknize/elasticsearch,ZTE-PaaS/elasticsearch,rmuir/elasticsearch-mapper-attachments,jpountz/elasticsearch,JervyShi/elasticsearch,naveenhooda2000/elasticsearch,shreejay/elasticsearch,elastic/elasticsearch-mapper-attachments,ricardocerq/elasticsearch,strapdata/elassandra,artnowo/elasticsearch,jpountz/elasticsearch,IanvsPoplicola/elasticsearch,nazarewk/elasticsearch,glefloch/elasticsearch,fforbeck/elasticsearch,umeshdangat/elasticsearch,Collaborne/elasticsearch-mapper-attachments,mohit/elasticsearch,markwalkom/elasticsearch,JackyMai/elasticsearch,sneivandt/elasticsearch,nomoa/elasticsearch,xuzha/elasticsearch,fernandozhu/elasticsearch,yynil/elasticsearch,s1monw/elasticsearch,coding0011/elasticsearch,markharwood/elasticsearch,elasticdog/elasticsearch,maddin2016/elasticsearch,avikurapati/elasticsearch,diendt/elasticsearch,LeoYao/elasticsearch,geidies/elasticsearch,artnowo/elasticsearch,Stacey-Gammon/elasticsearch,IanvsPoplicola/elasticsearch,ThiagoGarciaAlves/elasticsearch,MaineC/elasticsearch,Stacey-Gammon/elasticsearch,diendt/elasticsearch,ivansun1010/elasticsearch,a2lin/elasticsearch,kalimatas/elasticsearch,awislowski/elasticsearch,awislowski/elasticsearch,jimczi/elasticsearch,kalimatas/elasticsearch,jimczi/elasticsearch,yanjunh/elasticsearch,henakamaMSFT/elasticsearch,cwurm/elasticsearch,episerver/elasticsearch,i-am-Nathan/elasticsearch,ZTE-PaaS/elasticsearch,markharwood/elasticsearch,snikch/elasticsearch,a2lin/elasticsearch,lks21c/elasticsearch,brandonkearby/elasticsearch,strapdata/elassandra5-rc,JervyShi/elasticsearch,clintongormley/elasticsearch,lks21c/elasticsearch,mortonsykes/elasticsearch,camilojd/elasticsearch,strapdata/elassandra5-rc,mikemccand/elasticsearch,C-Bish/elasticsearch,bjorn-ali-goransson/elasticsearch-mapper-attachments,AndreKR/elasticsearch,jchampion/elasticsearch,trangvh/elasticsearch,JackyMai/elasticsearch,mikemccand/elasticsearch,StefanGor/elasticsearch,rajanm/elasticsearch,fred84/elasticsearch,ThiagoGarciaAlves/elasticsearch,JSCooke/elasticsearch,mapr/elasticsearch,camilojd/elasticsearch,uschindler/elasticsearch,Helen-Zhao/elasticsearch,pozhidaevak/elasticsearch,strapdata/elassandra,F0lha/elasticsearch,scottsom/elasticsearch,cwurm/elasticsearch,dpursehouse/elasticsearch,LewayneNaidoo/elasticsearch,nilabhsagar/elasticsearch,qwerty4030/elasticsearch,IanvsPoplicola/elasticsearch,AndreKR/elasticsearch,rajanm/elasticsearch,ESamir/elasticsearch,dongjoon-hyun/elasticsearch,tebriel/elasticsearch,GlenRSmith/elasticsearch,kalimatas/elasticsearch,F0lha/elasticsearch,awislowski/elasticsearch,episerver/elasticsearch,kalimatas/elasticsearch,Shepard1212/elasticsearch,LeoYao/elasticsearch,mortonsykes/elasticsearch,rmuir/elasticsearch,jchampion/elasticsearch,nazarewk/elasticsearch,coding0011/elasticsearch,StefanGor/elasticsearch,naveenhooda2000/elasticsearch,zkidkid/elasticsearch,fred84/elasticsearch,GlenRSmith/elasticsearch,lks21c/elasticsearch,jchampion/elasticsearch,andrejserafim/elasticsearch,wuranbo/elasticsearch,shreejay/elasticsearch,Helen-Zhao/elasticsearch,i-am-Nathan/elasticsearch,nknize/elasticsearch,girirajsharma/elasticsearch,GlenRSmith/elasticsearch,polyfractal/elasticsearch,girirajsharma/elasticsearch,Collaborne/elasticsearch-mapper-attachments,fforbeck/elasticsearch,myelin/elasticsearch,martinstuga/elasticsearch,kaneshin/elasticsearch,LewayneNaidoo/elasticsearch,polyfractal/elasticsearch,nilabhsagar/elasticsearch,gmarz/elasticsearch,elasticdog/elasticsearch,ricardocerq/elasticsearch,yynil/elasticsearch,alexshadow007/elasticsearch,cwurm/elasticsearch,s1monw/elasticsearch,yynil/elasticsearch,markwalkom/elasticsearch,brandonkearby/elasticsearch,jimczi/elasticsearch,mjason3/elasticsearch,ESamir/elasticsearch,nomoa/elasticsearch,ThiagoGarciaAlves/elasticsearch,zkidkid/elasticsearch,liweinan0423/elasticsearch,lks21c/elasticsearch,JackyMai/elasticsearch,nilabhsagar/elasticsearch,jpountz/elasticsearch,ggchangan/elasticsearch-mapper-attachments,nazarewk/elasticsearch,yanjunh/elasticsearch,wangtuo/elasticsearch,Stacey-Gammon/elasticsearch,naveenhooda2000/elasticsearch,shreejay/elasticsearch,bawse/elasticsearch,mikemccand/elasticsearch,sneivandt/elasticsearch,martinstuga/elasticsearch,nezirus/elasticsearch,alexshadow007/elasticsearch,wbowling/elasticsearch,episerver/elasticsearch,palecur/elasticsearch,rmuir/elasticsearch,rmuir/elasticsearch-mapper-attachments,davidvgalbraith/elasticsearch,wangtuo/elasticsearch,uschindler/elasticsearch,wangtuo/elasticsearch,henakamaMSFT/elasticsearch,bawse/elasticsearch,gingerwizard/elasticsearch,bornemix/elasticsearch-mapper-attachments,fforbeck/elasticsearch,F0lha/elasticsearch,mmaracic/elasticsearch,diendt/elasticsearch,pozhidaevak/elasticsearch,mjason3/elasticsearch,i-am-Nathan/elasticsearch,masaruh/elasticsearch,alexshadow007/elasticsearch,nomoa/elasticsearch,mmaracic/elasticsearch,MisterAndersen/elasticsearch,jchampion/elasticsearch,martinstuga/elasticsearch,trangvh/elasticsearch,episerver/elasticsearch,ZTE-PaaS/elasticsearch,gingerwizard/elasticsearch,brandonkearby/elasticsearch,liweinan0423/elasticsearch,F0lha/elasticsearch,artnowo/elasticsearch,sneivandt/elasticsearch,MisterAndersen/elasticsearch,robin13/elasticsearch,jprante/elasticsearch,jpountz/elasticsearch,jbertouch/elasticsearch,nknize/elasticsearch,wuranbo/elasticsearch,LeoYao/elasticsearch,StefanGor/elasticsearch,polyfractal/elasticsearch,wenpos/elasticsearch,njlawton/elasticsearch,tebriel/elasticsearch,alexshadow007/elasticsearch,wangtuo/elasticsearch,sreeramjayan/elasticsearch,girirajsharma/elasticsearch,gfyoung/elasticsearch,mikemccand/elasticsearch,PhaedrusTheGreek/elasticsearch,glefloch/elasticsearch,elasticdog/elasticsearch,geidies/elasticsearch,wenpos/elasticsearch,polyfractal/elasticsearch,spiegela/elasticsearch,njlawton/elasticsearch,bawse/elasticsearch,rlugojr/elasticsearch,JSCooke/elasticsearch,umeshdangat/elasticsearch,jimczi/elasticsearch,jbertouch/elasticsearch,geidies/elasticsearch,episerver/elasticsearch,ThiagoGarciaAlves/elasticsearch,rajanm/elasticsearch,bjorn-ali-goransson/elasticsearch-mapper-attachments,JervyShi/elasticsearch,rhoml/elasticsearch,cwurm/elasticsearch,ivansun1010/elasticsearch,wbowling/elasticsearch,myelin/elasticsearch,yanjunh/elasticsearch,MisterAndersen/elasticsearch,avikurapati/elasticsearch,polyfractal/elasticsearch,wbowling/elasticsearch,umeshdangat/elasticsearch,AndreKR/elasticsearch,jpountz/elasticsearch,jprante/elasticsearch,xuzha/elasticsearch,ricardocerq/elasticsearch,gingerwizard/elasticsearch,MisterAndersen/elasticsearch,mmaracic/elasticsearch,C-Bish/elasticsearch,JervyShi/elasticsearch,tebriel/elasticsearch,naveenhooda2000/elasticsearch,nknize/elasticsearch,njlawton/elasticsearch,sreeramjayan/elasticsearch,rhoml/elasticsearch,ESamir/elasticsearch,xuzha/elasticsearch,rlugojr/elasticsearch,trangvh/elasticsearch,i-am-Nathan/elasticsearch,wuranbo/elasticsearch,Shepard1212/elasticsearch,kaneshin/elasticsearch,Helen-Zhao/elasticsearch,qwerty4030/elasticsearch,glefloch/elasticsearch,jchampion/elasticsearch,mmaracic/elasticsearch,rhoml/elasticsearch,gfyoung/elasticsearch,palecur/elasticsearch,snikch/elasticsearch,vroyer/elassandra,fred84/elasticsearch,vroyer/elassandra,Shepard1212/elasticsearch,dpursehouse/elasticsearch,JervyShi/elasticsearch,nilabhsagar/elasticsearch,wbowling/elasticsearch,liweinan0423/elasticsearch,vroyer/elassandra,tebriel/elasticsearch,tebriel/elasticsearch,s1monw/elasticsearch,geidies/elasticsearch,HonzaKral/elasticsearch,elastic/elasticsearch-mapper-attachments,palecur/elasticsearch,rajanm/elasticsearch,mortonsykes/elasticsearch,mikemccand/elasticsearch,a2lin/elasticsearch,snikch/elasticsearch,wbowling/elasticsearch,elasticdog/elasticsearch,ivansun1010/elasticsearch,gmarz/elasticsearch,PhaedrusTheGreek/elasticsearch,dpursehouse/elasticsearch,artnowo/elasticsearch,MisterAndersen/elasticsearch,sneivandt/elasticsearch,AndreKR/elasticsearch,fernandozhu/elasticsearch,snikch/elasticsearch,andrejserafim/elasticsearch,coding0011/elasticsearch,mohit/elasticsearch,camilojd/elasticsearch,clintongormley/elasticsearch,davidvgalbraith/elasticsearch,Stacey-Gammon/elasticsearch,fernandozhu/elasticsearch,camilojd/elasticsearch,jprante/elasticsearch,nazarewk/elasticsearch,jprante/elasticsearch,bornemix/elasticsearch-mapper-attachments,avikurapati/elasticsearch,JSCooke/elasticsearch,martinstuga/elasticsearch,trangvh/elasticsearch,Shepard1212/elasticsearch,masaruh/elasticsearch,F0lha/elasticsearch,winstonewert/elasticsearch,qwerty4030/elasticsearch,pozhidaevak/elasticsearch,ivansun1010/elasticsearch,MaineC/elasticsearch,qwerty4030/elasticsearch,dpursehouse/elasticsearch,andrejserafim/elasticsearch,dpursehouse/elasticsearch,PhaedrusTheGreek/elasticsearch,kalimatas/elasticsearch,jbertouch/elasticsearch,rajanm/elasticsearch,i-am-Nathan/elasticsearch,pozhidaevak/elasticsearch,zkidkid/elasticsearch,ThiagoGarciaAlves/elasticsearch,wenpos/elasticsearch,mohit/elasticsearch,clintongormley/elasticsearch,scorpionvicky/elasticsearch,nomoa/elasticsearch,davidvgalbraith/elasticsearch,coding0011/elasticsearch,palecur/elasticsearch,JSCooke/elasticsearch,obourgain/elasticsearch,s1monw/elasticsearch,masaruh/elasticsearch,diendt/elasticsearch,andrejserafim/elasticsearch,davidvgalbraith/elasticsearch,strapdata/elassandra,robin13/elasticsearch,AndreKR/elasticsearch,AndreKR/elasticsearch,camilojd/elasticsearch,yanjunh/elasticsearch,vroyer/elasticassandra,winstonewert/elasticsearch,spiegela/elasticsearch,yynil/elasticsearch,jimczi/elasticsearch,Shepard1212/elasticsearch,gingerwizard/elasticsearch,strapdata/elassandra,s1monw/elasticsearch,yynil/elasticsearch,mohit/elasticsearch,nezirus/elasticsearch,wuranbo/elasticsearch,martinstuga/elasticsearch,masaruh/elasticsearch,wenpos/elasticsearch,jprante/elasticsearch,clintongormley/elasticsearch,andrejserafim/elasticsearch,maddin2016/elasticsearch,markharwood/elasticsearch,mmaracic/elasticsearch,lks21c/elasticsearch,maddin2016/elasticsearch,gingerwizard/elasticsearch,xuzha/elasticsearch,glefloch/elasticsearch,avikurapati/elasticsearch,xuzha/elasticsearch,strapdata/elassandra,clintongormley/elasticsearch,scottsom/elasticsearch,LewayneNaidoo/elasticsearch,qwerty4030/elasticsearch,gingerwizard/elasticsearch,JSCooke/elasticsearch,PhaedrusTheGreek/elasticsearch,fred84/elasticsearch,rmuir/elasticsearch,LeoYao/elasticsearch,ESamir/elasticsearch,fernandozhu/elasticsearch,obourgain/elasticsearch,girirajsharma/elasticsearch,davidvgalbraith/elasticsearch,markwalkom/elasticsearch,nomoa/elasticsearch,geidies/elasticsearch,martinstuga/elasticsearch,MaineC/elasticsearch,ricardocerq/elasticsearch,liweinan0423/elasticsearch,gfyoung/elasticsearch,strapdata/elassandra5-rc,wbowling/elasticsearch,snikch/elasticsearch,PhaedrusTheGreek/elasticsearch,umeshdangat/elasticsearch,mjason3/elasticsearch,maddin2016/elasticsearch,fforbeck/elasticsearch,diendt/elasticsearch,GlenRSmith/elasticsearch,wangtuo/elasticsearch,shreejay/elasticsearch,cwurm/elasticsearch,sreeramjayan/elasticsearch,StefanGor/elasticsearch,sreeramjayan/elasticsearch,ThiagoGarciaAlves/elasticsearch,uschindler/elasticsearch,coding0011/elasticsearch,njlawton/elasticsearch,yynil/elasticsearch,robin13/elasticsearch,rlugojr/elasticsearch,mortonsykes/elasticsearch,kaneshin/elasticsearch,winstonewert/elasticsearch,myelin/elasticsearch,rlugojr/elasticsearch,wuranbo/elasticsearch,MaineC/elasticsearch,bawse/elasticsearch,uschindler/elasticsearch,strapdata/elassandra5-rc,diendt/elasticsearch,HonzaKral/elasticsearch,henakamaMSFT/elasticsearch,sreeramjayan/elasticsearch,zkidkid/elasticsearch,LewayneNaidoo/elasticsearch