README.dev.md: Add PPA instructions to get tsearch-extras.
README.dev.md: Add PPA instructions to get tsearch-extras.

Fixes #109.

Juanvulcano/zulip,eeshangarg/zulip,cosmicAsymmetry/zulip,grave-w-grave/zulip,Frouk/zulip,mahim97/zulip,paxapy/zulip,mohsenSy/zulip,mohsenSy/zulip,dattatreya303/zulip,j831/zulip,jphilipsen05/zulip,jrowan/zulip,ahmadassaf/zulip,paxapy/zulip,Juanvulcano/zulip,KingxBanana/zulip,jrowan/zulip,dawran6/zulip,rht/zulip,aakash-cr7/zulip,Vallher/zulip,punchagan/zulip,susansls/zulip,KingxBanana/zulip,AZtheAsian/zulip,jphilipsen05/zulip,jackrzhang/zulip,reyha/zulip,tommyip/zulip,brainwane/zulip,timabbott/zulip,Diptanshu8/zulip,ryanbackman/zulip,dhcrzf/zulip,cosmicAsymmetry/zulip,brockwhittaker/zulip,samatdav/zulip,umkay/zulip,susansls/zulip,ahmadassaf/zulip,paxapy/zulip,TigorC/zulip,PhilSk/zulip,niftynei/zulip,amyliu345/zulip,Vallher/zulip,Galexrt/zulip,Jianchun1/zulip,dattatreya303/zulip,amanharitsh123/zulip,jainayush975/zulip,jainayush975/zulip,sonali0901/zulip,brainwane/zulip,niftynei/zulip,synicalsyntax/zulip,aakash-cr7/zulip,shubhamdhama/zulip,shubhamdhama/zulip,peguin40/zulip,vikas-parashar/zulip,dattatreya303/zulip,hackerkid/zulip,brockwhittaker/zulip,shubhamdhama/zulip,eeshangarg/zulip,zulip/zulip,rht/zulip,Frouk/zulip,eeshangarg/zulip,souravbadami/zulip,Jianchun1/zulip,amanharitsh123/zulip,arpith/zulip,SmartPeople/zulip,showell/zulip,peiwei/zulip,Diptanshu8/zulip,calvinleenyc/zulip,showell/zulip,ryanbackman/zulip,Frouk/zulip,AZtheAsian/zulip,zacps/zulip,tommyip/zulip,sharmaeklavya2/zulip,jphilipsen05/zulip,Frouk/zulip,vabs22/zulip,Galexrt/zulip,christi3k/zulip,krtkmj/zulip,hackerkid/zulip,shubhamdhama/zulip,JPJPJPOPOP/zulip,aakash-cr7/zulip,timabbott/zulip,sup95/zulip,brainwane/zulip,dawran6/zulip,amyliu345/zulip,joyhchen/zulip,AZtheAsian/zulip,synicalsyntax/zulip,amyliu345/zulip,jphilipsen05/zulip,j831/zulip,vaidap/zulip,AZtheAsian/zulip,jackrzhang/zulip,punchagan/zulip,andersk/zulip,krtkmj/zulip,vaidap/zulip,andersk/zulip,shubhamdhama/zulip,dhcrzf/zulip,andersk/zulip,niftynei/zulip,niftynei/zulip,ryanbackman/zulip,peiwei/zulip,arpith/zulip,rht/zulip,peguin40/zulip,sup95/zulip,calvinleenyc/zulip,Diptanshu8/zulip,synicalsyntax/zulip,JPJPJPOPOP/zulip,Juanvulcano/zulip,joyhchen/zulip,verma-varsha/zulip,brainwane/zulip,joyhchen/zulip,PhilSk/zulip,KingxBanana/zulip,jackrzhang/zulip,rishig/zulip,zulip/zulip,TigorC/zulip,dhcrzf/zulip,amanharitsh123/zulip,showell/zulip,Galexrt/zulip,vabs22/zulip,jrowan/zulip,vabs22/zulip,amyliu345/zulip,JPJPJPOPOP/zulip,susansls/zulip,blaze225/zulip,vaidap/zulip,peguin40/zulip,andersk/zulip,reyha/zulip,andersk/zulip,synicalsyntax/zulip,brainwane/zulip,kou/zulip,arpith/zulip,Vallher/zulip,samatdav/zulip,Galexrt/zulip,zulip/zulip,JPJPJPOPOP/zulip,tommyip/zulip,Vallher/zulip,tommyip/zulip,zacps/zulip,PhilSk/zulip,sup95/zulip,KingxBanana/zulip,timabbott/zulip,isht3/zulip,SmartPeople/zulip,verma-varsha/zulip,dawran6/zulip,Diptanshu8/zulip,shubhamdhama/zulip,dhcrzf/zulip,hackerkid/zulip,sonali0901/zulip,joyhchen/zulip,peiwei/zulip,jackrzhang/zulip,SmartPeople/zulip,grave-w-grave/zulip,joyhchen/zulip,peiwei/zulip,showell/zulip,punchagan/zulip,vaidap/zulip,sharmaeklavya2/zulip,vikas-parashar/zulip,isht3/zulip,cosmicAsymmetry/zulip,JPJPJPOPOP/zulip,sonali0901/zulip,rht/zulip,timabbott/zulip,mohsenSy/zulip,eeshangarg/zulip,punchagan/zulip,mahim97/zulip,reyha/zulip,sonali0901/zulip,krtkmj/zulip,AZtheAsian/zulip,reyha/zulip,reyha/zulip,jainayush975/zulip,andersk/zulip,sonali0901/zulip,paxapy/zulip,peiwei/zulip,SmartPeople/zulip,amanharitsh123/zulip,kou/zulip,brockwhittaker/zulip,Diptanshu8/zulip,umkay/zulip,eeshangarg/zulip,vabs22/zulip,brockwhittaker/zulip,isht3/zulip,mohsenSy/zulip,hackerkid/zulip,christi3k/zulip,Juanvulcano/zulip,mahim97/zulip,souravbadami/zulip,isht3/zulip,jackrzhang/zulip,samatdav/zulip,aakash-cr7/zulip,tommyip/zulip,Galexrt/zulip,umkay/zulip,KingxBanana/zulip,kou/zulip,andersk/zulip,dawran6/zulip,jrowan/zulip,ahmadassaf/zulip,eeshangarg/zulip,peguin40/zulip,paxapy/zulip,TigorC/zulip,souravbadami/zulip,TigorC/zulip,sharmaeklavya2/zulip,Vallher/zulip,timabbott/zulip,paxapy/zulip,arpith/zulip,peguin40/zulip,rishig/zulip,Jianchun1/zulip,cosmicAsymmetry/zulip,dattatreya303/zulip,mahim97/zulip,verma-varsha/zulip,dattatreya303/zulip,rishig/zulip,ahmadassaf/zulip,Frouk/zulip,Vallher/zulip,sup95/zulip,zacps/zulip,j831/zulip,vikas-parashar/zulip,ahmadassaf/zulip,niftynei/zulip,Jianchun1/zulip,samatdav/zulip,brockwhittaker/zulip,Vallher/zulip,niftynei/zulip,jrowan/zulip,christi3k/zulip,jackrzhang/zulip,souravbadami/zulip,hackerkid/zulip,grave-w-grave/zulip,PhilSk/zulip,rishig/zulip,PhilSk/zulip,hackerkid/zulip,blaze225/zulip,susansls/zulip,umkay/zulip,arpith/zulip,calvinleenyc/zulip,jphilipsen05/zulip,ahmadassaf/zulip,dhcrzf/zulip,AZtheAsian/zulip,jainayush975/zulip,mohsenSy/zulip,j831/zulip,reyha/zulip,dawran6/zulip,vabs22/zulip,vaidap/zulip,amyliu345/zulip,Galexrt/zulip,christi3k/zulip,vaidap/zulip,krtkmj/zulip,blaze225/zulip,eeshangarg/zulip,zulip/zulip,jrowan/zulip,JPJPJPOPOP/zulip,samatdav/zulip,jphilipsen05/zulip,KingxBanana/zulip,krtkmj/zulip,aakash-cr7/zulip,jackrzhang/zulip,sonali0901/zulip,isht3/zulip,krtkmj/zulip,Frouk/zulip,Galexrt/zulip,souravbadami/zulip,punchagan/zulip,SmartPeople/zulip,cosmicAsymmetry/zulip,rishig/zulip,dhcrzf/zulip,amyliu345/zulip,sup95/zulip,zulip/zulip,cosmicAsymmetry/zulip,blaze225/zulip,sharmaeklavya2/zulip,showell/zulip,krtkmj/zulip,zulip/zulip,tommyip/zulip,zacps/zulip,shubhamdhama/zulip,verma-varsha/zulip,susansls/zulip,isht3/zulip,umkay/zulip,PhilSk/zulip,synicalsyntax/zulip,punchagan/zulip,SmartPeople/zulip,kou/zulip,vabs22/zulip,zacps/zulip,rht/zulip,showell/zulip,blaze225/zulip,samatdav/zulip,ryanbackman/zulip,dattatreya303/zulip,Jianchun1/zulip,rht/zulip,zulip/zulip,j831/zulip,kou/zulip,Frouk/zulip,mahim97/zulip,Juanvulcano/zulip,grave-w-grave/zulip,ahmadassaf/zulip,vikas-parashar/zulip,rishig/zulip,Jianchun1/zulip,showell/zulip,kou/zulip,synicalsyntax/zulip,peiwei/zulip,blaze225/zulip,TigorC/zulip,TigorC/zulip,rht/zulip,sharmaeklavya2/zulip,kou/zulip,brockwhittaker/zulip,brainwane/zulip,christi3k/zulip,rishig/zulip,punchagan/zulip,Juanvulcano/zulip,joyhchen/zulip,dawran6/zulip,susansls/zulip,grave-w-grave/zulip,verma-varsha/zulip,vikas-parashar/zulip,ryanbackman/zulip,grave-w-grave/zulip,Diptanshu8/zulip,amanharitsh123/zulip,sharmaeklavya2/zulip,arpith/zulip,jainayush975/zulip,mahim97/zulip,verma-varsha/zulip,tommyip/zulip,amanharitsh123/zulip,umkay/zulip,dhcrzf/zulip,peiwei/zulip,ryanbackman/zulip,j831/zulip,calvinleenyc/zulip,mohsenSy/zulip,umkay/zulip,jainayush975/zulip,peguin40/zulip,calvinleenyc/zulip,sup95/zulip,synicalsyntax/zulip,timabbott/zulip,timabbott/zulip,hackerkid/zulip,souravbadami/zulip,aakash-cr7/zulip,christi3k/zulip,zacps/zulip,calvinleenyc/zulip,brainwane/zulip,vikas-parashar/zulip