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 branch 'iterm2_solarized_autoinstall' of https://github.com/skwp/dotfiles

* 'iterm2_solarized_autoinstall' of https://github.com/skwp/dotfiles:
  Add solarized theme to console vim
  Add autoinstall of Solarized iTerm2 themes