Removing system ndll check
Added missing `classPath` attr to haxelib.json.
When selfupdate, it should follow symlink to find and overwrite the real file.
Merge pull request #99 from andyli/selfupdate

Selfupdate fix
Replace $@ with "$@" and exec command from sh
Merge pull request #101 from andyli/travis

TravisCI
Merge pull request #103 from tkawachi/master

Replace $@ with "$@" and exec command from sh
Merge pull request #86 from MattTuttle/ndll

Removing system ndll check
sort libraries by name when using haxelib list (closes #67)
group commands in categories and improve usage printing
categorize git as development command
sort case-insensitively
TravisCI: run apt-get update before installing anything