update PHP route guide README as per feedback
update PHP route guide README as per feedback

LuminateWireless/grpc,ctiller/grpc,jtattermusch/grpc,chrisdunelm/grpc,matt-kwong/grpc,goldenbull/grpc,yugui/grpc,a11r/grpc,PeterFaiman/ruby-grpc-minimal,ipylypiv/grpc,royalharsh/grpc,a-veitch/grpc,PeterFaiman/ruby-grpc-minimal,madongfly/grpc,ipylypiv/grpc,doubi-workshop/grpc,yongni/grpc,geffzhang/grpc,chrisdunelm/grpc,ofrobots/grpc,s4uliu5/grpc-common,yang-g/grpc,vjpai/grpc,y-zeng/grpc,miselin/grpc,donnadionne/grpc,thinkerou/grpc,andrewpollock/grpc,fuchsia-mirror/third_party-grpc,hstefan/grpc,yang-g/grpc,mehrdada/grpc,malexzx/grpc,MakMukhi/grpc,wangyikai/grpc,andrewpollock/grpc,apolcyn/grpc,chrisdunelm/grpc,podsvirov/grpc,kpayson64/grpc,yang-g/grpc-common,sreecha/grpc,ejona86/grpc,mehrdada/grpc,Vizerai/grpc,sreecha/grpc,goldenbull/grpc,firebase/grpc,yugui/grpc,grpc/grpc,tengyifei/grpc,jtattermusch/grpc,ananthonline/grpc,thinkerou/grpc,zeliard/grpc-common,dklempner/grpc,muxi/grpc,cgvarela/grpc,deepaklukose/grpc,matt-kwong/grpc,yugui/grpc,infinit/grpc,doubi-workshop/grpc,soltanmm/grpc-common,goldenbull/grpc,murgatroid99/grpc,stanley-cheung/grpc,cgvarela/grpc,jcanizales/grpc,makdharma/grpc,makdharma/grpc,perumaalgoog/grpc,ctiller/grpc,deepaklukose/grpc,maxwell-demon/grpc,JoeWoo/grpc,mehrdada/grpc,y-zeng/grpc,baylabs/grpc,baylabs/grpc,fuchsia-mirror/third_party-grpc,s4uliu5/grpc-common,MakMukhi/grpc,rosmo/grpc-common,rjshade/grpc,wcevans/grpc,tengyifei/grpc,rosmo/grpc-common,wangyikai/grpc,7anner/grpc,w4-sjcho/grpc,matt-kwong/grpc,daniel-j-born/grpc,matt-kwong/grpc,thinkerou/grpc,makdharma/grpc,quizlet/grpc,dklempner/grpc,yang-g/grpc-common,donnadionne/grpc,thinkerou/grpc,quizlet/grpc,vsco/grpc,7anner/grpc,Vizerai/grpc,bogdandrutu/grpc,donnadionne/grpc,yinsu/grpc,larsonmpdx/grpc,geffzhang/grpc,msmania/grpc,thinkerou/grpc,perumaalgoog/grpc,carl-mastrangelo/grpc,infinit/grpc,zhimingxie/grpc,fuchsia-mirror/third_party-grpc,adelez/grpc,apolcyn/grpc,yang-g/grpc,mehrdada/grpc,tamihiro/grpc,jboeuf/grpc-common,royalharsh/grpc,adelez/grpc,perumaalgoog/grpc,ofrobots/grpc,grpc/grpc,kpayson64/grpc,yinsu/grpc,ofrobots/grpc,ejona86/grpc,jboeuf/grpc,soltanmm/grpc,s4uliu5/grpc-common,carl-mastrangelo/grpc,ananthonline/grpc,msiedlarek/grpc,a11r/grpc,philcleveland/grpc,greasypizza/grpc,ipylypiv/grpc,doubi-workshop/grpc,s4uliu5/grpc-common,kumaralokgithub/grpc,nicolasnoble/grpc,kriswuollett/grpc,malexzx/grpc,doubi-workshop/grpc,mehrdada/grpc,malexzx/grpc,tengyifei/grpc,royalharsh/grpc,maxwell-demon/grpc,LuminateWireless/grpc,geekan/grpc-common,infinit/grpc,malexzx/grpc,ejona86/grpc,Vizerai/grpc,ncteisen/grpc,kriswuollett/grpc,pszemus/grpc,ctiller/grpc,soltanmm/grpc,ppietrasa/grpc,donnadionne/grpc,zhimingxie/grpc,ctiller/grpc,chrisdunelm/grpc,wangyikai/grpc,msiedlarek/grpc,kriswuollett/grpc,geekan/grpc-common,tengyifei/grpc,deepaklukose/grpc,ctiller/grpc,hstefan/grpc,soltanmm/grpc-common,thinkerou/grpc,chai2010/grpc-common,jtattermusch/grpc,jcanizales/grpc,jtattermusch/grpc,yongni/grpc,murgatroid99/grpc,tengyifei/grpc,cgvarela/grpc,w4-sjcho/grpc,matt-kwong/grpc,yugui/grpc,grpc/grpc,kumaralokgithub/grpc,adelez/grpc,kumaralokgithub/grpc,quizlet/grpc,ejona86/grpc,kumaralokgithub/grpc,wangyikai/grpc,ipylypiv/grpc,bjori/grpc,chai2010/grpc-common,pmarks-net/grpc,wangyikai/grpc,royalharsh/grpc,nicolasnoble/grpc,VcamX/grpc,a11r/grpc,msiedlarek/grpc,mehrdada/grpc,kskalski/grpc,ejona86/grpc,sreecha/grpc,nicolasnoble/grpc,Crevil/grpc,grani/grpc,jtattermusch/grpc,grpc/grpc,infinit/grpc,ipylypiv/grpc,adelez/grpc,podsvirov/grpc,soltanmm/grpc,msmania/grpc,ppietrasa/grpc,bjori/grpc,kskalski/grpc,ncteisen/grpc,jcanizales/grpc,Crevil/grpc,grani/grpc,7anner/grpc,ananthonline/grpc,kriswuollett/grpc,y-zeng/grpc,ctiller/grpc,perumaalgoog/grpc,MakMukhi/grpc,stanley-cheung/grpc,ejona86/grpc,jboeuf/grpc,daniel-j-born/grpc,rjshade/grpc,yongni/grpc,yang-g/grpc,soltanmm-google/grpc,rosmo/grpc-common,andrewpollock/grpc,soltanmm/grpc,thinkerou/grpc,zeliard/grpc-common,jboeuf/grpc-common,arkmaxim/grpc,goldenbull/grpc,murgatroid99/grpc,pmarks-net/grpc,ofrobots/grpc,chrisdunelm/grpc,JoeWoo/grpc,jboeuf/grpc,a11r/grpc,zhimingxie/grpc,madongfly/grpc,bogdandrutu/grpc,s4uliu5/grpc-common,dgquintas/grpc,simonkuang/grpc,malexzx/grpc,ofrobots/grpc,greasypizza/grpc,firebase/grpc,dgquintas/grpc,yongni/grpc,vjpai/grpc,kumaralokgithub/grpc,podsvirov/grpc,nicolasnoble/grpc,larsonmpdx/grpc,soltanmm/grpc,Crevil/grpc,dklempner/grpc,soltanmm/grpc,firebase/grpc,Crevil/grpc,bogdandrutu/grpc,quizlet/grpc,MakMukhi/grpc,pszemus/grpc,murgatroid99/grpc,jcanizales/grpc,vjpai/grpc,ctiller/grpc,fuchsia-mirror/third_party-grpc,jtattermusch/grpc,deepaklukose/grpc,a11r/grpc,wcevans/grpc,msmania/grpc,muxi/grpc,greasypizza/grpc,y-zeng/grpc,firebase/grpc,vsco/grpc,thunderboltsid/grpc,simonkuang/grpc,wcevans/grpc,w4-sjcho/grpc,chai2010/grpc-common,Crevil/grpc,vjpai/grpc,miselin/grpc,goldenbull/grpc,grani/grpc,ppietrasa/grpc,pszemus/grpc,rjshade/grpc,rjshade/grpc,arkmaxim/grpc,tengyifei/grpc,jboeuf/grpc,muxi/grpc,chrisdunelm/grpc,bjori/grpc,VcamX/grpc,grani/grpc,murgatroid99/grpc,grani/grpc,quizlet/grpc,fuchsia-mirror/third_party-grpc,ananthonline/grpc,cgvarela/grpc,ipylypiv/grpc,jboeuf/grpc,perumaalgoog/grpc,pszemus/grpc,yongni/grpc,ctiller/grpc,andrewpollock/grpc,7anner/grpc,tamihiro/grpc,yongni/grpc,wcevans/grpc,chrisdunelm/grpc,grpc/grpc,deepaklukose/grpc,carl-mastrangelo/grpc,donnadionne/grpc,a-veitch/grpc,ctiller/grpc,muxi/grpc,JoeWoo/grpc,kskalski/grpc,kumaralokgithub/grpc,arkmaxim/grpc,a-veitch/grpc,a-veitch/grpc,kumaralokgithub/grpc,adelez/grpc,thinkerou/grpc,ipylypiv/grpc,thunderboltsid/grpc,pszemus/grpc,infinit/grpc,7anner/grpc,a11r/grpc,7anner/grpc,LuminateWireless/grpc,w4-sjcho/grpc,wcevans/grpc,kpayson64/grpc,maxwell-demon/grpc,tamihiro/grpc,daniel-j-born/grpc,jboeuf/grpc-common,leifurhauks/grpc,JoeWoo/grpc,nicolasnoble/grpc,ppietrasa/grpc,philcleveland/grpc,andrewpollock/grpc,andrewpollock/grpc,ipylypiv/grpc,murgatroid99/grpc,msiedlarek/grpc,VcamX/grpc,nicolasnoble/grpc,vsco/grpc,soltanmm-google/grpc,infinit/grpc,bjori/grpc,jboeuf/grpc,nicolasnoble/grpc,geffzhang/grpc,dgquintas/grpc,baylabs/grpc,muxi/grpc,yugui/grpc,firebase/grpc,stanley-cheung/grpc,hstefan/grpc,kskalski/grpc,apolcyn/grpc,ppietrasa/grpc,kskalski/grpc,firebase/grpc,soltanmm/grpc-common,perumaalgoog/grpc,thinkerou/grpc,thunderboltsid/grpc,thunderboltsid/grpc,maxwell-demon/grpc,bogdandrutu/grpc,murgatroid99/grpc,adelez/grpc,philcleveland/grpc,apolcyn/grpc,muxi/grpc,larsonmpdx/grpc,jtattermusch/grpc,maxwell-demon/grpc,grpc/grpc,makdharma/grpc,kskalski/grpc,tengyifei/grpc,muxi/grpc,soltanmm-google/grpc,yang-g/grpc-common,chai2010/grpc-common,ofrobots/grpc,goldenbull/grpc,bogdandrutu/grpc,makdharma/grpc,daniel-j-born/grpc,adelez/grpc,larsonmpdx/grpc,soltanmm/grpc-common,greasypizza/grpc,PeterFaiman/ruby-grpc-minimal,jcanizales/grpc,jcanizales/grpc,Crevil/grpc,larsonmpdx/grpc,jtattermusch/grpc,pmarks-net/grpc,greasypizza/grpc,fuchsia-mirror/third_party-grpc,stanley-cheung/grpc,jboeuf/grpc-common,carl-mastrangelo/grpc,pmarks-net/grpc,bogdandrutu/grpc,w4-sjcho/grpc,podsvirov/grpc,soltanmm/grpc-common,Vizerai/grpc,vjpai/grpc,bjori/grpc,yang-g/grpc,pmarks-net/grpc,hstefan/grpc,wangyikai/grpc,rosmo/grpc-common,carl-mastrangelo/grpc,ncteisen/grpc,dklempner/grpc,matt-kwong/grpc,geekan/grpc-common,vjpai/grpc,madongfly/grpc,tengyifei/grpc,kriswuollett/grpc,ncteisen/grpc,firebase/grpc,chrisdunelm/grpc,a-veitch/grpc,bjori/grpc,zeliard/grpc-common,leifurhauks/grpc,kpayson64/grpc,larsonmpdx/grpc,kpayson64/grpc,mehrdada/grpc,podsvirov/grpc,a-veitch/grpc,wcevans/grpc,zeliard/grpc-common,ejona86/grpc,pszemus/grpc,madongfly/grpc,ofrobots/grpc,stanley-cheung/grpc,ppietrasa/grpc,yugui/grpc,deepaklukose/grpc,matt-kwong/grpc,jboeuf/grpc-common,yinsu/grpc,greasypizza/grpc,philcleveland/grpc,cgvarela/grpc,grani/grpc,y-zeng/grpc,geekan/grpc-common,stanley-cheung/grpc,miselin/grpc,thunderboltsid/grpc,rjshade/grpc,chrisdunelm/grpc,dgquintas/grpc,fuchsia-mirror/third_party-grpc,thunderboltsid/grpc,leifurhauks/grpc,JoeWoo/grpc,yinsu/grpc,PeterFaiman/ruby-grpc-minimal,PeterFaiman/ruby-grpc-minimal,larsonmpdx/grpc,dgquintas/grpc,msiedlarek/grpc,murgatroid99/grpc,vjpai/grpc,geekan/grpc-common,zeliard/grpc-common,Vizerai/grpc,miselin/grpc,stanley-cheung/grpc,dklempner/grpc,dgquintas/grpc,sreecha/grpc,vsco/grpc,pszemus/grpc,tengyifei/grpc,jboeuf/grpc-common,carl-mastrangelo/grpc,leifurhauks/grpc,w4-sjcho/grpc,geffzhang/grpc,leifurhauks/grpc,MakMukhi/grpc,zhimingxie/grpc,firebase/grpc,maxwell-demon/grpc,hstefan/grpc,MakMukhi/grpc,PeterFaiman/ruby-grpc-minimal,thinkerou/grpc,donnadionne/grpc,geekan/grpc-common,pszemus/grpc,sreecha/grpc,geffzhang/grpc,ncteisen/grpc,jtattermusch/grpc,miselin/grpc,vsco/grpc,ofrobots/grpc,jcanizales/grpc,nicolasnoble/grpc,infinit/grpc,carl-mastrangelo/grpc,a11r/grpc,y-zeng/grpc,daniel-j-born/grpc,jcanizales/grpc,maxwell-demon/grpc,hstefan/grpc,soltanmm-google/grpc,stanley-cheung/grpc,yang-g/grpc-common,yugui/grpc,larsonmpdx/grpc,thunderboltsid/grpc,wangyikai/grpc,malexzx/grpc,jboeuf/grpc,grpc/grpc,Vizerai/grpc,leifurhauks/grpc,geffzhang/grpc,Crevil/grpc,thunderboltsid/grpc,royalharsh/grpc,Vizerai/grpc,kpayson64/grpc,geekan/grpc-common,perumaalgoog/grpc,dgquintas/grpc,yang-g/grpc,makdharma/grpc,ejona86/grpc,grpc/grpc,grani/grpc,maxwell-demon/grpc,donnadionne/grpc,royalharsh/grpc,chai2010/grpc-common,nicolasnoble/grpc,maxwell-demon/grpc,geffzhang/grpc,tamihiro/grpc,simonkuang/grpc,daniel-j-born/grpc,kriswuollett/grpc,grpc/grpc,stanley-cheung/grpc,jboeuf/grpc,7anner/grpc,podsvirov/grpc,donnadionne/grpc,nicolasnoble/grpc,LuminateWireless/grpc,pszemus/grpc,msmania/grpc,pmarks-net/grpc,grani/grpc,vsco/grpc,geffzhang/grpc,rjshade/grpc,dklempner/grpc,arkmaxim/grpc,carl-mastrangelo/grpc,quizlet/grpc,nicolasnoble/grpc,firebase/grpc,soltanmm/grpc,stanley-cheung/grpc,doubi-workshop/grpc,s4uliu5/grpc-common,carl-mastrangelo/grpc,jtattermusch/grpc,vjpai/grpc,chai2010/grpc-common,mehrdada/grpc,JoeWoo/grpc,s4uliu5/grpc-common,soltanmm/grpc-common,jboeuf/grpc,miselin/grpc,ppietrasa/grpc,wcevans/grpc,leifurhauks/grpc,jboeuf/grpc,pmarks-net/grpc,yongni/grpc,kriswuollett/grpc,yang-g/grpc-common,ananthonline/grpc,kpayson64/grpc,bogdandrutu/grpc,hstefan/grpc,malexzx/grpc,thunderboltsid/grpc,baylabs/grpc,royalharsh/grpc,kumaralokgithub/grpc,yang-g/grpc-common,pmarks-net/grpc,quizlet/grpc,pszemus/grpc,madongfly/grpc,infinit/grpc,tamihiro/grpc,muxi/grpc,7anner/grpc,ncteisen/grpc,VcamX/grpc,grpc/grpc,rosmo/grpc-common,ncteisen/grpc,dgquintas/grpc,zhimingxie/grpc,thinkerou/grpc,philcleveland/grpc,bogdandrutu/grpc,w4-sjcho/grpc,geekan/grpc-common,rjshade/grpc,kriswuollett/grpc,baylabs/grpc,zhimingxie/grpc,baylabs/grpc,soltanmm-google/grpc,cgvarela/grpc,zhimingxie/grpc,chai2010/grpc-common,msmania/grpc,sreecha/grpc,kumaralokgithub/grpc,LuminateWireless/grpc,tamihiro/grpc,adelez/grpc,kriswuollett/grpc,sreecha/grpc,s4uliu5/grpc-common,y-zeng/grpc,donnadionne/grpc,infinit/grpc,firebase/grpc,soltanmm/grpc,simonkuang/grpc,malexzx/grpc,msmania/grpc,deepaklukose/grpc,VcamX/grpc,tamihiro/grpc,msmania/grpc,stanley-cheung/grpc,greasypizza/grpc,soltanmm-google/grpc,donnadionne/grpc,vjpai/grpc,apolcyn/grpc,yongni/grpc,yinsu/grpc,ctiller/grpc,ipylypiv/grpc,ofrobots/grpc,arkmaxim/grpc,podsvirov/grpc,ncteisen/grpc,simonkuang/grpc,wcevans/grpc,bjori/grpc,msmania/grpc,yinsu/grpc,ncteisen/grpc,yang-g/grpc,LuminateWireless/grpc,geekan/grpc-common,podsvirov/grpc,7anner/grpc,ctiller/grpc,murgatroid99/grpc,stanley-cheung/grpc,doubi-workshop/grpc,makdharma/grpc,sreecha/grpc,daniel-j-born/grpc,yongni/grpc,wcevans/grpc,a-veitch/grpc,ncteisen/grpc,soltanmm/grpc-common,y-zeng/grpc,jcanizales/grpc,grani/grpc,yang-g/grpc-common,mehrdada/grpc,andrewpollock/grpc,bjori/grpc,firebase/grpc,rjshade/grpc,doubi-workshop/grpc,quizlet/grpc,greasypizza/grpc,Crevil/grpc,ananthonline/grpc,Vizerai/grpc,yinsu/grpc,ejona86/grpc,perumaalgoog/grpc,arkmaxim/grpc,vsco/grpc,mehrdada/grpc,kpayson64/grpc,Vizerai/grpc,madongfly/grpc,vsco/grpc,arkmaxim/grpc,jtattermusch/grpc,zeliard/grpc-common,kskalski/grpc,goldenbull/grpc,sreecha/grpc,zeliard/grpc-common,ppietrasa/grpc,yugui/grpc,ejona86/grpc,ctiller/grpc,apolcyn/grpc,w4-sjcho/grpc,MakMukhi/grpc,apolcyn/grpc,pszemus/grpc,simonkuang/grpc,muxi/grpc,daniel-j-born/grpc,yinsu/grpc,cgvarela/grpc,dgquintas/grpc,royalharsh/grpc,perumaalgoog/grpc,donnadionne/grpc,doubi-workshop/grpc,zhimingxie/grpc,rosmo/grpc-common,VcamX/grpc,w4-sjcho/grpc,baylabs/grpc,soltanmm-google/grpc,donnadionne/grpc,simonkuang/grpc,leifurhauks/grpc,VcamX/grpc,greasypizza/grpc,matt-kwong/grpc,muxi/grpc,sreecha/grpc,larsonmpdx/grpc,ananthonline/grpc,murgatroid99/grpc,msiedlarek/grpc,dklempner/grpc,pmarks-net/grpc,VcamX/grpc,jboeuf/grpc-common,rosmo/grpc-common,kskalski/grpc,philcleveland/grpc,sreecha/grpc,andrewpollock/grpc,msiedlarek/grpc,madongfly/grpc,sreecha/grpc,simonkuang/grpc,wangyikai/grpc,hstefan/grpc,yang-g/grpc-common,jboeuf/grpc,podsvirov/grpc,MakMukhi/grpc,vjpai/grpc,arkmaxim/grpc,deepaklukose/grpc,malexzx/grpc,leifurhauks/grpc,PeterFaiman/ruby-grpc-minimal,soltanmm/grpc,a-veitch/grpc,baylabs/grpc,a11r/grpc,soltanmm/grpc-common,deepaklukose/grpc,fuchsia-mirror/third_party-grpc,chrisdunelm/grpc,jboeuf/grpc,apolcyn/grpc,y-zeng/grpc,madongfly/grpc,quizlet/grpc,s4uliu5/grpc-common,soltanmm-google/grpc,philcleveland/grpc,Vizerai/grpc,LuminateWireless/grpc,philcleveland/grpc,yugui/grpc,ananthonline/grpc,a11r/grpc,PeterFaiman/ruby-grpc-minimal,dgquintas/grpc,zeliard/grpc-common,arkmaxim/grpc,jboeuf/grpc-common,daniel-j-born/grpc,VcamX/grpc,apolcyn/grpc,zhimingxie/grpc,JoeWoo/grpc,vjpai/grpc,LuminateWireless/grpc,ananthonline/grpc,yang-g/grpc-common,dklempner/grpc,fuchsia-mirror/third_party-grpc,msiedlarek/grpc,nicolasnoble/grpc,muxi/grpc,rosmo/grpc-common,grpc/grpc,madongfly/grpc,Vizerai/grpc,ncteisen/grpc,carl-mastrangelo/grpc,doubi-workshop/grpc,philcleveland/grpc,mehrdada/grpc,PeterFaiman/ruby-grpc-minimal,JoeWoo/grpc,andrewpollock/grpc,chrisdunelm/grpc,cgvarela/grpc,Crevil/grpc,carl-mastrangelo/grpc,yang-g/grpc,tamihiro/grpc,pszemus/grpc,wangyikai/grpc,vjpai/grpc,hstefan/grpc,mehrdada/grpc,adelez/grpc,dklempner/grpc,bjori/grpc,JoeWoo/grpc,miselin/grpc,jboeuf/grpc-common,kpayson64/grpc,PeterFaiman/ruby-grpc-minimal,jtattermusch/grpc,rosmo/grpc-common,bogdandrutu/grpc,makdharma/grpc,ppietrasa/grpc,MakMukhi/grpc,rjshade/grpc,yinsu/grpc,carl-mastrangelo/grpc,vsco/grpc,tamihiro/grpc,zeliard/grpc-common,thinkerou/grpc,simonkuang/grpc,miselin/grpc,msmania/grpc,goldenbull/grpc,ejona86/grpc,chai2010/grpc-common,soltanmm-google/grpc,dgquintas/grpc,ejona86/grpc,fuchsia-mirror/third_party-grpc,kpayson64/grpc,soltanmm/grpc-common,grpc/grpc,muxi/grpc,makdharma/grpc,matt-kwong/grpc,a-veitch/grpc,LuminateWireless/grpc,baylabs/grpc,goldenbull/grpc,ncteisen/grpc,geffzhang/grpc,msiedlarek/grpc,chai2010/grpc-common,yang-g/grpc,royalharsh/grpc,kskalski/grpc,miselin/grpc,firebase/grpc,kpayson64/grpc