Add missing features from similar projects

[jfinkels]

Add missing features from any of the similar projects listed at https://flask-restless.readthedocs.org/en/latest/similarprojects.html

[taion]

I would add Django REST Framework to this list. I think it's probably the most full-featured REST framework available in Python right now.

Also, the Tastypie link on that page actually links to Flask-RESTful. There's restless as well, FWIW: http://restless.readthedocs.org/en/latest/

[jfinkels]

I have fixed the Tastypie link and added the Django REST framework and restless links. Thanks.

[TrilceAC]

I like the Eve's Data Integrity and Concurrency Control optional feature.

[jfinkels]

Thanks for the suggestion @TrilceAC! I basically suggested this (less eloquently) in issue #190. I decided it might be out of scope for Flask-Restless, but let's continue the discussion there. It would be helpful for me if someone gave a brief overview of how Eve implements this.