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GitHub User: jeffcressman
This blog post compares Grape and rails-api performance: http://blog.backupify.com/2013/09/30/a-framework-comparison-of-grape-vs-railsapi-part-1-performance/
I tried this solution and it didn't work for me. Perhaps I did something wrong.
I did however find this post, which suggested simply adding the callback url to your app on Twitter as
Couldn't get this working with pow though.