Added multiple news methods listed below :
- get_organization_by_name
- get_organization_id_by_name
- get_vdc_by_name
- get_vdc_id_by_name
- get_catalog_by_name
- get_catalog_id_by_name
- get_catalog_item_by_name
Merge pull request #12 from frapposelli/add_search_methods

Add *_by_name helpers