Reformat the command list

Proposal to address #122

 - [x] Remove the red coloring (it looks like an error). Commands that connect to Platform.sh are cyan, because Platform.sh is cyan-ish...
 - [x] Review aliases (now that we can have more!)
 - [x] Restore missing `logout` command

![screen shot 2014-11-28 at 00 31 54](https://cloud.githubusercontent.com/assets/1465106/5222641/0299db4a-7696-11e4-85b8-3152758f14fa.png)