httrack missed a lot of links remove archive
Merge branch 'master' of https://github.com/HaxeFlixel/haxeflixel.com

# By Gama11
# Via Gama11
* 'master' of https://github.com/HaxeFlixel/haxeflixel.com:
  Remove FLX_THREADING
  Getting started docs: Compatibility with lime / OpenFL 1.2.1, general improvements