Adds MetadataManager
Merge branch 'master' of github.com:softlayer/softlayer-api-python-client into metadata
Adds 'metadata' command in CLI
Adds MetadataManager
Adds 'metadata' command in CLI
Returns nice error when user doesn't have metadata
Merge branch 'metadata' of github.com:sudorandom/softlayer-api-python-client into metadata

Conflicts:
	SoftLayer/CLI/modules/metadata.py
Formatting
Fixes

CLI: Re-arranges `sl metadata network [network_type]`
CLI: Fixes printing when using SystemExit.
Merge pull request #43 from sudorandom/metadata

Adds Metadata Command/Manager