Add v0.7.0 label to new API endpoints

This calls out that endpoints are only available in v0.7.0+. This might need to be revisited for future versions.

![screenshot 2014-08-26 12 06 21](https://cloud.githubusercontent.com/assets/29612/4050113/1c2a1a60-2d54-11e4-88c3-f846c7b15d2b.png)