Merge pull request #8 from jails/master

Close #7 & #3 and provide a better Debian based distributions support.
Merge pull request #9 from jails/master

Upgrate MongoDB version to 2.4.4.
Merge pull request #10 from jails/master

Enhance Linux support for all Ubuntu 12.4+ & Debian 6.0+ OS.
Merge pull request #11 from jails/master

Refactoring & make Composer optionnal.
Attempt to support colored output for OSX.