create-library command should be consistent with other commands

[leggetter]

create-app reports the following requires a name and will auto generate a require-prefix based on the app name.

› ./brjs create-app    
creating plugins
performing node discovery
making plugins available via model
BladeRunnerJS version: v0.7-0-gff6e9cb, built: 14 April 2014 15:53 BST

Problem:
  Parameter 'new-app-name' is required.

Usage:
  brjs create-app <new-app-name> [<require-prefix>]

create-library requires a namespace to be specified:

› ./brjs create-library
creating plugins
performing node discovery
making plugins available via model
BladeRunnerJS version: v0.7-0-gff6e9cb, built: 14 April 2014 15:53 BST

Problem:
  Parameter 'new-library-name' is required.
  Parameter 'target-app-name' is required.
  Parameter 'library-namespace' is required.

Usage:
  brjs create-library <target-app-name> <new-library-name> <library-namespace>

1. Should library-namespace be renamed to be require-prefix?
2. library-namespace/require-prefix should be optional and if not present should default to the library name in the same way create-app does.

[andy-berry-dev]

This is no longer an issue since the create-library command has been rewritten to allow both br and thirdparty library types and 'require-prefix' is no longer a command line option.

The help output for the command is:

Description:
  Create a new empty library within a given application.

Usage:
  brjs create-library <target-app-name> <new-library-name> [(-t|--type) <type>]

Help:
    <target-app-name>
        the application the new library will be created within

  <new-library-name>
        the name of the library that will be created

  [(-t|--type) <type>]
        (default: br)