Client/go rewrite

```
NAME:
   drill - a command line frontend to flitter

USAGE:
   drill [global options] command [command options] [arguments...]

VERSION:
   0.1.0

COMMANDS:
   login	login to the given controller
   logout	log out of the controller
   create	create a new application in the controller
   register	register a new account with the given controller
   whoami	whoami queries the controller to see who it thinks you are
   help, h	Shows a list of commands or help for one command
   
GLOBAL OPTIONS:
   -c, --config '/home/xena/.drill.yaml'	configuration file for drill [$DRILL_CONFIG]
   --help, -h					show help
   --version, -v				print the version
```

```
~/go/src/github.com/Xe/flitter/drill (client/go-rewrite) X
λ go run *.go register --username xena --password foo http://127.0.0.1:3000
User xena created.

~/go/src/github.com/Xe/flitter/drill (client/go-rewrite) X
λ cat ~/.drill.yaml 
url: http://127.0.0.1:3000
authkey: 70f2c063-b53c-4609-9cb7-f0fd88a3400d
```