Adding users/self/media/liked
I added the ability to get the media liked by the authenticated user. That was my need, I have no idea whether it's of any use in any other use case, so feel free to not pull if you don't think it's of general interest.
Thanks for your work. I'd like to merge this PR, but I think it'd be better to include only changes to README.md and src/instagram.js. I will generate dist/* after the PR get merged and there's no need to include grunt version update.
Ah yes of course. I nudged grunt to latest packages because it didn't seem to pull down dependencies right first time, but as you can see, there's very little change that would affect the build.