Configuration files for emacs configuration. Made to rails programmers

Changelog (2011/02/23):

• Command "C-c s" runs just one rspec example.
• Command "C-c t" toogles between spec and app files.
• Command "C-c i" indent a selected region of the file.

Changelog (2011/02/24):

• Added support to magit.
  • See http://philjackson.github.com/magit/magit.html for instructions.
• Command "C-c g" opens a magit-status buffer.