Update README.md
Update version

Pushed v0.0.1 to rubygems before updating readme installation instructions.
Pushed a second version, but forgot to update version.rb, so rubygems was at
0.0.2 and version file at 0.0.1.  Moving both to 0.0.3 to resync.
Merge branch 'master' of github.com:kjayma/surveyor_gui