Adds a link to the "MongoDB database import" section of the wiki, as this step must be completed before they can play any levels.
Also adds some whitespace :)
bootstrap.sh was using the "open" command to open a link. While this may work on a Mac, the command does not exist on Linux. Instead we can now use a switch to use the correct command for the users OS.
Ohh and python.org/getit is a 404 -> Changed it to python.org/download
Durring the setup the "sass" gem is installed. This works fine on Linux operating systems like Ubuntu. However, on some other distrobutions such as Arch Linux "gem install" defaults to the a local folder in the users home directory. When installed here the sass binary is not on the path and coco-brunch cannot find it (and thus crashes with an error). By adding the "--no-user-install" flag we are telling gem to install it globally no matter what the system default is thus fixing this problem.
subprocess.check_output("mongod --version",shell=True) returns a byte
string so to convert it to a regular string we should do this :
mongo_version_string = subprocess.check_output("mongod
--version",shell=True)
mongo_version_string = mongo_version_string.decode(encoding='UTF-8')
