Merge pull request PistonDevelopers#211 from vosen/master

Bump version to 0.1.2 and give multirust priority over global install

Merge pull request PistonDevelopers#180 from vosen/master

Bump version to 0.1.1 and fix various gdb regressions

Merge pull request PistonDevelopers#130 from vosen/master

More polish for installation and ootb experience