Merge pull request #161 from esacteksab/develop

does not return ETags or Last-Modifed in iter_languages

Fixes #125
Support Feeds API

- Add integration test for it
- Fixes #118
Forgot to add the cassette for the Feeds API
For travis, let us print the mode
Test Repository#iter_languages
Actually print out mode
Revert "For travis, let us print the mode"

This reverts commit 0c8e9c36219214cf08b33c0ff1812e6cefa53353.
Revert "Actually print out mode"

This reverts commit e1e5c7c264b53a81bcd9f253f96ed1a55f49f8b4.
Add iter_languages cassette