EasEvents Web: Added Capfile and deploy.rb

* Added configurations In capfile and deploy.rb
* Made task for redis server
* Changed Capistrano from 2.13.5 -> 2.9.0 -> 2.0.0 -> 2.15.4 -> 2.15.5
  bcoz of compatibility issues.
* Made production.rb and staging.rb for both capistrano environments under config/deploy directory

Todo:
*  Need to test for final deployment.