Add autoinstall of Solarized iTerm2 themes

The rake script now detects the available iTerm2 profiles and
installs the solarized scheme where needed.

It's an interactive procedure that requires selection by the user.
Add solarized theme to console vim
Merge pull request #290 from skwp/iterm2_solarized_autoinstall

Add autoinstall of Solarized iTerm2 themes