added bootstrap file

Created by: DomThePorcupine

Hey guys this is my bootstrap file, I have not been able to test it for Fedora or SUSE but everything should work. I was thinking this would make things a little easier, especially with the readme because it could be shortened to something like http://github.com/rawfile/bootstrap.sh | bash instead of all those instructions for the individual distros. I am not familiar at all with NIXos so if someone else knows about that it would be great.

The script also has a useful update function: ./bootstrap -u which will update the rust compiler with the binary.sh function and also pull the newest version of redox

This script will also allow you to remove a bunch of the specific distro.sh files(except arch although it wouldn't be that hard to add it).