Include GEM_HOME when copying rvm environment variables
cd command without arguments should switch to home directory
Merge pull request #4 from rubycut/patch-1

cd command without arguments should switch to home directory
Merge pull request #3 from jdelStrother/patch-1

Include GEM_HOME when copying rvm environment variables
Revert "Fixed cd."

This reverts commit bfa3fc37245bb441e73b01fd1f3c9fbe2f934a6c.
README updated.
Merge branch 'master' into patched
Merge branch 'patched' into addons