add fork, star button, banner
Remove API Key
Add img thumbnail & less API call

Img thumbnail can help to find visually if the user make an error in the
channel name. Refactor code in gaspi.js to avoid some calls to API.
Merge pull request #1 from LuminusDev/addInformations

Add img thumbnail & less API call
bootstrap cdn
fix gitub-buttoms
explain what to do
API Key for browser applications
Update gapsi.js
update css thumbnail channel