Merge branch 'release/v0.0.1'

* release/v0.0.1:
  Updated to rails 4rc2
  Updated bundle
  Set the database to PostgreSQL for heroku
  Change a wrong ruby version number in Gemfile
  Set some settings in Gemfile and Procfile for Heroku
  Again removed the default README.rdoc which was generated during update to rails v4
  Updated to rails v4. Also Gemfile source has changed to use HTTP instead of HTTPS
  Put sqlite gem in development group
  Added foreman Procfile and thin gem for web server
  Replased the temporary index page
  Replased the README file
Added and installed devise