Merge pull request #11 from mansoorelahi/Ruk

Devise login added and removed unwanted file
add the necessary indexing for adventures table
Merge pull request #12 from mansoorelahi/Ruk

Twitter Registration and login
configuration changes
heroku changes
Merge branch 'master' of github.com:mansoorelahi/aidhen
small style chane
add the links for navigation collapse
fixed conflicts in application layout