feat(Documentation/api): document the store statistics
feat(Documentation/api): document the store statistics

vimalk78/etcd,honeyqa/etcd,mgoelzer/etcd-fork2,swingbach/etcd,delkyd/etcd,wfxiang08/etcd,spotify/etcd,a-robinson/etcd,dnaeon/etcd,armstrongli/etcd,sebrandon1/etcd,mwitkow-io/etcd,asim/etcd,mqliang/etcd,glevand/coreos--etcd,barakmich/etcd,glensc/etcd,spotify/etcd,CrazyJvm/etcd,QuantiumTechnology/etcd,hongchaodeng/etcd,kkaneda/etcd,QuantiumTechnology/etcd,cvik/etcd,dterei/etcd,ajityagaty/etcd,sofuture/etcd,mkumatag/etcd,xueshanf/etcd,ravigadde/etcd,insequent/etcd,mkumatag/etcd,mkumatag/etcd,fanminshi/etcd,barakmich/etcd,xebitstudios/etcd,princeqjzh/etcd,princeqjzh/etcd,luxas/etcd,gosharplite/etcd,offscale/etcd,shawnps/etcd,dalanlan/etcd,lzbgt/etcd,yifan-gu/etcd,jravetch/etcd,glycerine/etcd,xueshanf/etcd,pigfoot/etcd,xdlinear/etcd,endocode/etcd,arthurcolle/etcd,zaphod-concur/etcd,openedbox/etcd,bspline/etcd,cchamplin/etcd,giantswarm/etcd,StorReduce/etcd,rnaveiras/etcd,raoofm/etcd,lzbgt/etcd,steveeJ/etcd,gouyang/etcd,hroyrh/etcd,bakins/etcd,gtank/etcd,qqsun8819/etcd,mischief/etcd,mike-lerch/etcd,gae123/etcd,combk8s/etcd,justintung/etcd,iamqizhao/etcd,es-chow/etcd,wantonsolutions/dinv-etcd,gityf/etcd,pauldallen/etcd,joshix/etcd,jeremyeder/etcd,SivagnanamCiena/etcd,akauppi/etcd,a-robinson/etcd,xiang90/etcd,Eagle-X/etcd,tguangch/etcd,lorneli/etcd,gosharplite/etcd,spotify/etcd,crandles/etcd,improbable-io/etcd,ajityagaty/etcd,OyTao/etcd_learning,plasticbox/etcd,raoofm/etcd,linuxcer/etcd,olark/etcd,etcd-io/etcd,bluebreezecf/etcd,crandles/etcd,ylong/etcd,jefby/etcd,xychu/etcd,pengzj/etcd,onlyjob/etcd,wfxiang08/etcd,Winslett/etcd,delkyd/etcd,pauldallen/etcd,cognusion/etcd,visheshnp/etcd,kkaneda/etcd,spacejam/etcd,lorneli/etcd,rchicoli/etcd,wowsoso/etcd,yichengq/etcd,etcd-io/etcd,fasaxc/etcd,Eagle-X/etcd,snailwalker/etcd,coreos/etcd,ecnahc515/etcd,shakefu/etcd,jmptrader/etcd,cvik/etcd,msanterre/etcd,Ulexus/etcd,kingland/etcd,yyljlyy/etcd,armstrongli/etcd,OyTao/etcd_learning,gae123/etcd,westhood/etcd,shakefu/etcd,svdata/etcd,hpcloud/etcd,nekto0n/etcd,glycerine/etcd,heyitsanthony/etcd,mickep76/etcd,shafreeck/etcd,justintung/etcd,tangkun75/etcd,improbable-io/etcd,insionng/etcd,wowsoso/etcd,achanda/etcd,xiang90/etcd,nkhare/etcd,tguangch/etcd,combk8s/etcd,Ulexus/etcd,dnaeon/etcd,msanterre/etcd,polvi/etcd,nkhare/etcd,insequent/etcd,plasticbox/etcd,gyuho/etcd,mischief/etcd,StorReduce/etcd,onlyjob/etcd,joshix/etcd,sayden/etcd,mwitkow/etcd,yifan-gu/etcd,chenbaihu/etcd,offscale/etcd,mqliang/etcd,tempbottle/etcd,Timer/etcd,yudai/etcd,tamird/etcd,chai2010/etcd,jlamillan/etcd,jmptrader/etcd,rnaveiras/etcd,bspline/etcd,yichengq/etcd,SivagnanamCiena/etcd,ylong/etcd,imzhulei/etcd,gouyang/etcd,chipironcin/etcd,arthurcolle/etcd,sinsharat/etcd,honeyqa/etcd,yyljlyy/etcd,ktateish/etcd,xychu/etcd,svdata/etcd,giantswarm/etcd,qqsun8819/etcd,jchauncey/etcd,chenbaihu/etcd,asim/etcd,nieanan/etcd,youxidev/etcd,li-ang/etcd,rchicoli/etcd,wantonsolutions/dinv-etcd,xdlinear/etcd,steveeJ/etcd,spacejam/etcd,whuwxl/etcd,sebschrader/etcd,xebitstudios/etcd,polvi/etcd,elimisteve/etcd,hongchaodeng/etcd,mickep76/etcd,Ulexus/etcd,njharman/etcd,heyitsanthony/etcd,chipironcin/etcd,fgbreel/etcd,sayden/etcd,betawaffle/etcd,jchauncey/etcd,cvik/etcd,glensc/etcd,chai2010-playground/etcd,YuleiXiao/etcd,Ulexus/etcd,bdarnell/etcd,glevand/coreos--etcd,coreos/etcd,fasaxc/etcd,mitake/etcd,akauppi/etcd,olark/etcd,fgbreel/etcd,junxu/etcd,devfreesg/etcd,njucslqq/etcd,elimisteve/etcd,oscarrr110/etcd,vimalk78/etcd,HideoYamauchi/etcd,whuwxl/etcd,mike-lerch/etcd,mitake/etcd,yudai/etcd,nekto0n/etcd,snailwalker/etcd,dterei/etcd,gityf/etcd,csuideal/etcd,ajityagaty/etcd,sofuture/etcd,cockroachdb/etcd,ravigadde/etcd,buaazp/etcd,buaazp/etcd,robszumski/etcd,cockroachdb/etcd,fasaxc/etcd,bakins/etcd,jeremyeder/etcd,openedbox/etcd,siddontang/etcd,endocode/etcd,bluebreezecf/etcd,dannysauer/etcd,rnaveiras/etcd,handsomesun/etcd,tangkun75/etcd,oscarrr110/etcd,shawnps/etcd,handsomesun/etcd,dannysauer/etcd,jravetch/etcd,spotify/etcd,betawaffle/etcd,freeloop1114/etcd,wantonsolutions/dinv-etcd,li-ang/etcd,jlamillan/etcd,siddontang/etcd,chai2010/etcd,lumjjb/etcd,Winslett/etcd,junxu/etcd,Timer/etcd,lumjjb/etcd,axingblog/etcd,TheHippo/etcd,gtank/etcd,robszumski/etcd,dalanlan/etcd,mwitkow-io/etcd,HideoYamauchi/etcd,cchamplin/etcd,Yhgenomics/etcd,hongbinz/etcd,bdarnell/etcd,YuleiXiao/etcd,sebrandon1/etcd,jonboulle/etcd,fanminshi/etcd,devfreesg/etcd,jefby/etcd,njucslqq/etcd,youxidev/etcd,njharman/etcd,tamird/etcd,CrazyJvm/etcd,es-chow/etcd,achanda/etcd,purpleidea/etcd,etcd-io/etcd,jonboulle/etcd,iamqizhao/etcd,axingblog/etcd,cognusion/etcd,hroyrh/etcd,luxas/etcd,beni55/etcd,hpcloud/etcd,shafreeck/etcd,insionng/etcd,mgoelzer/etcd-fork2,sebschrader/etcd,chai2010-playground/etcd,csuideal/etcd,westhood/etcd,sinsharat/etcd,cvik/etcd,visheshnp/etcd,imzhulei/etcd,linuxcer/etcd,purpleidea/etcd,ecnahc515/etcd,hongbinz/etcd,Yhgenomics/etcd,mqliang/etcd,ktateish/etcd,TheHippo/etcd,swingbach/etcd,tempbottle/etcd,zaphod-concur/etcd,hzy001/etcd,kingland/etcd,beni55/etcd,qiaochao911/etcd,freeloop1114/etcd,gyuho/etcd,hzy001/etcd,nieanan/etcd,qiaochao911/etcd,mwitkow/etcd,pengzj/etcd