Everything: Clean up a little, remove OAuth, remove non-GET requests, add PSR-4 autoloading.

- @be-dmitry 
- @mikeklein13 

Haters gonna hate.
![image](https://cloud.githubusercontent.com/assets/1442186/4594741/39446a9a-5092-11e4-9eeb-f6f6413d3522.png)