Change the edit links the main github page, this way users logged out of github won’t get an error page.
Merge branch 'master' of https://github.com/HaxeFlixel/haxeflixel.com

# By Gama11 (3) and Chris (2)
# Via Gama11
* 'master' of https://github.com/HaxeFlixel/haxeflixel.com:
  Remove duplicate repository logos
  Add FlxTrailArea demo, swap it with the FlxTween demo on the homepage, change source url to point to the dev branch of flixel-demos
  README.md:Add logo
  Clarify windows only .bat instructions.
  Add info on documentation reop