Rename guru theme to sunrise

themes/guru.zsh-theme → themes/sunrise.zsh-theme

 #-------------------------------------------------------------------------------
-# Guru theme for oh-my-zsh by Adam Lindberg (eproxus@gmail.com)
+# Sunrise theme for oh-my-zsh by Adam Lindberg (eproxus@gmail.com)
 # Intended to be used with Solarized: http://ethanschoonover.com/solarized
 # (Needs Git plugin for current_branch method)
 #-------------------------------------------------------------------------------