Merge pull request #72 from neverendingqs/readme/docs

Changing docs to point to stable.

readme.md

@@ -27,7 +27,7 @@ Get it via `pip install pyiterable`!
 
 ## Links
 
-* API docs: [http://pyiterable.readthedocs.org/en/latest/](http://pyiterable.readthedocs.org/en/latest/)
+* API docs: [http://pyiterable.readthedocs.io/en/stable/](http://pyiterable.readthedocs.io/en/stable/)
 * Travis CI: [https://travis-ci.org/neverendingqs/pyiterable](https://travis-ci.org/neverendingqs/pyiterable)
 * Coveralls: [https://coveralls.io/github/neverendingqs/pyiterable](https://coveralls.io/github/neverendingqs/pyiterable)
 * Source: [https://github.com/neverendingqs/pyiterable](https://github.com/neverendingqs/pyiterable)