run-dev.py: Add Google auth test message & link to docs.
run-dev.py: Add Google auth test message & link to docs.

tommyip/zulip,verma-varsha/zulip,Galexrt/zulip,brainwane/zulip,synicalsyntax/zulip,shubhamdhama/zulip,kou/zulip,zulip/zulip,Galexrt/zulip,rishig/zulip,Galexrt/zulip,verma-varsha/zulip,vaidap/zulip,verma-varsha/zulip,vaidap/zulip,andersk/zulip,vaidap/zulip,vabs22/zulip,eeshangarg/zulip,hackerkid/zulip,brainwane/zulip,eeshangarg/zulip,zulip/zulip,tommyip/zulip,mahim97/zulip,jackrzhang/zulip,tommyip/zulip,vabs22/zulip,amanharitsh123/zulip,jackrzhang/zulip,punchagan/zulip,zulip/zulip,rishig/zulip,tommyip/zulip,dhcrzf/zulip,Galexrt/zulip,rht/zulip,timabbott/zulip,zulip/zulip,brainwane/zulip,zulip/zulip,hackerkid/zulip,rishig/zulip,amanharitsh123/zulip,zulip/zulip,kou/zulip,showell/zulip,brainwane/zulip,dhcrzf/zulip,hackerkid/zulip,rht/zulip,rishig/zulip,dhcrzf/zulip,jackrzhang/zulip,mahim97/zulip,synicalsyntax/zulip,kou/zulip,amanharitsh123/zulip,brainwane/zulip,timabbott/zulip,showell/zulip,brockwhittaker/zulip,kou/zulip,brainwane/zulip,hackerkid/zulip,jackrzhang/zulip,mahim97/zulip,shubhamdhama/zulip,verma-varsha/zulip,timabbott/zulip,vabs22/zulip,timabbott/zulip,shubhamdhama/zulip,brockwhittaker/zulip,rht/zulip,andersk/zulip,vaidap/zulip,tommyip/zulip,eeshangarg/zulip,brockwhittaker/zulip,timabbott/zulip,dhcrzf/zulip,jackrzhang/zulip,punchagan/zulip,showell/zulip,mahim97/zulip,eeshangarg/zulip,synicalsyntax/zulip,eeshangarg/zulip,shubhamdhama/zulip,vaidap/zulip,hackerkid/zulip,vabs22/zulip,rishig/zulip,showell/zulip,andersk/zulip,synicalsyntax/zulip,dhcrzf/zulip,mahim97/zulip,eeshangarg/zulip,kou/zulip,timabbott/zulip,showell/zulip,brockwhittaker/zulip,punchagan/zulip,vaidap/zulip,brockwhittaker/zulip,kou/zulip,punchagan/zulip,Galexrt/zulip,verma-varsha/zulip,rht/zulip,rishig/zulip,synicalsyntax/zulip,showell/zulip,dhcrzf/zulip,punchagan/zulip,timabbott/zulip,amanharitsh123/zulip,vabs22/zulip,Galexrt/zulip,kou/zulip,shubhamdhama/zulip,rht/zulip,verma-varsha/zulip,showell/zulip,punchagan/zulip,eeshangarg/zulip,brockwhittaker/zulip,shubhamdhama/zulip,tommyip/zulip,amanharitsh123/zulip,dhcrzf/zulip,andersk/zulip,punchagan/zulip,vabs22/zulip,rht/zulip,synicalsyntax/zulip,tommyip/zulip,synicalsyntax/zulip,jackrzhang/zulip,andersk/zulip,mahim97/zulip,hackerkid/zulip,zulip/zulip,Galexrt/zulip,andersk/zulip,amanharitsh123/zulip,shubhamdhama/zulip,brainwane/zulip,andersk/zulip,rht/zulip,jackrzhang/zulip,hackerkid/zulip,rishig/zulip