Evernote class

Hello, 

I work on [everest-js]( https://github.com/berryboy/everest-js ). I have some evernode customization that might be useful.

Please check evernote.js file. You will see the Evernote class. This class try to simplify Evernote API interface by:
- Abstract Thrift, Userstore, Notestore, Shard-Id and etc.
- Integrate OAuth into the module
- Require only one file & create only one class's object

Please also check [Everest-js](https://github.com/berryboy/everest-js/blob/master/everest.js). It will show you how to use the class interface.
- Create Evernote object with API key/secret
- Get authToken with OAuth, get a user object with authToken
- Then, you can call any Evernote's function with the user object