Read members and member/id endpoint

Hey folks,

I'm back with another PR. I'll try and make my commit history cleaner in future too I swear :smile: This PR adds read endpoints for /members
![members](https://cloud.githubusercontent.com/assets/1377956/4768961/d6a0bf1a-5b72-11e4-9436-84fb1b35d32c.png)
and /members/id
![member](https://cloud.githubusercontent.com/assets/1377956/4768965/df42ff5c-5b72-11e4-8f4b-d5b481b408ac.png)