Merge pull request #38 from karlito139/master

updated the readme file.
Merge pull request #40 from karlito139/master

Corrected some orthographic errors
Merge pull request #45 from karlito139/master

Added some configuration (hostname, IP, automatic generation of the drbd secret)
added a contributing file
Merge pull request #48 from karlito139/contributing

update
corrected a listing bug in the hard drive selection
specified the user to use even using the ssh connexion
Merge pull request #49 from karlito139/CorrectBugInstallScript

corrected a listing bug in the hard drive selection
Merge pull request #50 from karlito139/correctBugConnexionLocalhost

specified the user to use even using the ssh connexion
corrected some typos in the user module
Merge pull request #51 from karlito139/correctTypoUserModul

corrected some typos in the user module
We now remove the default vhost of nginx when we install it.
Launch rex at the boot of the systeme.
Made the launching script of rex executable.
We now use the script created for that to launch the rex configuration at the boot.
Corrected a badly written line.
Added some dependencies when launching rex at startup.
Sleep befaure launching lamamos.
Increased the time of waiting at boot before launching rex.
Added missing semi colon