get_case_studies        Search and download case studies
get_institutions        List Institutions
get_tag_types           List Tag Types
get_tag_values          List Tag Values
get_units_of_assessment
                        List Units of Assessment
ref_get                 Call the REF Impact Case Studies API
ref_tags                Table of all REF Impact Case Study tags.
refimpact               refimpact: API wrapper for the UK REF 2014
                        Impact Case Studies Database
