Upgrade to Haxeflixel 4.0.0

[alihassan0]

Please note the following

• some game play mechanics maybe a little buggy because i don't have a reference to test against . also because there has been a massive change in Haxeflixel API since V 3.1.x
• this was tested on my machine which is running Linux mint built on Ubunto 14.04.
  so if possible can someone test it on window and mac.

Changes

• upgrade to haxeflixel 4.0.0, Fix syntax errors

• Refactor Main.hx , ProjectClass.hx

• Remove tuxCoding.nmml

  it was conflicting with project.xml

• Fix a MenuState Bug where invalid cast crashes the build

• Fix a bug caused by wrong sprite size

• Fix a crashing bug cause by incrementing an initialized variable

[deepakagg]

Thanks Ali I will once test it on mac and will merge code after verifying. Thanks for upgrading Haxe