added auth_token info to github.md
added auth_token info to github.md

syntax for adding a secure token to github.md
Shredder121/website,gep13/website-1,Shredder121/website,appveyor/website,Shredder121/website,gep13/website-1,saper/appveyor-website,gep13/website-1,howitzer-industries/website,howitzer-industries/website,saper/appveyor-website,saper/appveyor-website,howitzer-industries/website,appveyor/website,appveyor/website