Merge pull request #2 from BrendanThompson/master

Update some small bits
Removed specific emphasis on  rbenv from PR.
Added svm install options to bash svm script.
Updated ps1 for consistency with bash script.
Removing dependency on dirname for shell scripts.
Updated ps1 installer to point to release 0.2.0.
Created shell based installer for *nix.
Updated to reflect installer for *nix.
Merge pull request #1 from paulbouwer/master

Pulling Pauls updates