sydneystockholm/follower — pull request #4 by jbergstroem (2014-10-16 23:51:18+00:00)
Title: Add content-type header to oauth2 request

It seems like the twitter api is now [enforcing a content type](https://dev.twitter.com/oauth/application-only) (see step 2) on the oauth2 post.

This fixes three failing tests:
```
#followerCount
1) should get the # of followers a user has
✓ should fail on an invalid username
#urlTweets
✓ should get the # of tweets a url has
✓ should fail on an invalid url
#latestTweets
2) should get the latest tweets from a user
#latestHashtagTweets
3) should get the latest tweets by hashtag
```

Was thinking that we perhaps want to merge headers in https://github.com/sydneystockholm/follower/blob/master/lib/request.js#L43 rather than replacing them?