Merge pull request #129 from sudorandom/master

Moves verbose option. Warnings for deprecated methods
Version bump to v2.3.0
Adds Password Auth to CLI Configuration

This change introduces the ability for 'sl config setup' to be given your
username/password and it will go out and grab your API key or generate one if
one does not exist.

 * Moves format_output to SoftLayer.CLI.helpers
 * API Key/Password input is masked

Example Usage:

$ sl config setup
Username: someuser
API Key or Password:
Endpoint URL [https://api.softlayer.com/xmlrpc/v3/]:
:..............:..................................................................:
:         Name : Value                                                            :
:..............:..................................................................:
:     Username : someuser                                                         :
:      API Key : oyVmeipYQCNrjVS4rF9bHWV7D75S6pa1fghFl384v7mwRCbHTfuJ8qRORIqoVnha :
: Endpoint URL : https://api.softlayer.com/xmlrpc/v3/                             :
:..............:..................................................................:
Are you sure you want to write settings to "/Users/username/.softlayer"? [Y/n]: y