caskdata/common — pull request #21 by tyatskiv (2014-12-31 16:03:08+00:00)
Title: COOPR-604: CLI: help command output should be more readable.

@jwang47 I have added the HelpFormatter interface for custom help output, and also implemented the DefaultHelpFormatter for output by default.

Please see updated COOPR help output below:
```
coopr (http://localhost:55054)> help
COOPR_HOST=localhost
COOPR_USER=admin
COOPR_TENANT=superadmin

Available commands:
add
• add services on cluster : Adds one or more services to a cluster
connect
• connect to as [using port ] [with ssl ]: Connects to a Coopr instance
create
• create cluster with template