make validate methods as an private method for avoiding to use it as an instance methods
Git +EOL
Upgrade Rails and use pessimistic versioning

Pessimistic versioning is awesome and makes everything easier.
Also upgrade Rails to 3.2.17
fix travis error Gem bundler is not installed
travis fix
Merge pull request #219 from rajcybage/validation_in_private

Small refactoring Add validate methods in private for avoiding to use it as an instance methods
No more Ruby 1.8!
Merge pull request #221 from tijmenb/pessimistic-gemfile

Upgrade Rails and use pessimistic versioning
Merge https://github.com/cantino/huginn