:point_right: Feature Flipping! :point_left:

# Feature flipping with the flip gem: 
https://github.com/pda/flip

## Benefits:
- Can safely deploy new untested features without making them explicitly accessible
- If shit breaks, features can be turned on and off

## In this pull request:
- Ability to disable user registrations / login without redeploying the app (not locked down at controller level, but you get the idea)
- Installation of flip


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# I'm outta here!
![table_flip](https://cloud.githubusercontent.com/assets/570660/3539086/82396e9c-0837-11e4-95bf-23fc8298121a.gif)