add to master awesome list

[dimitropoulos]

The logical graduation point for this repo is to be added to https://github.com/sindresorhus/awesome. This would be great because it gives the list a lot more visibility. When I set up this repo I tried to follow all the guidelines (there are many) at the time to make it easier to add when the time came that it was more mature. I think it's been mature enough for some time.

Last time I checked, the only remaining thing that needs to be done to add to the master list is for the person making the PR that adds it to also review two other pending PRs on https://github.com/sindresorhus/awesome. Perhaps they loosened that requirement, but it's worth a check. I always intended to do this in my time at Weaveworks but alas, didn't ever get to it. Should only take a few minutes I imagine?