Require net/http for production
Add city field to meetup search

* Adds 'city' field to meetup search so api search does not default to
 server location.
* Adds ember-easyForm
* Adds ember-validations
* Modifies GroupsController#index to take a location parameter

* Update eak-rails to latest version
* Adds error message if config/secrets.yml is not present
Update to Rails 4.0.2.

This resolves a number of security vulnerabilities.
Merge pull request #23 from rjackson/security-updates

Update to Rails 4.0.2.
Merge pull request #22 from dockyard/lr-add-city

Lr add city