refactored api class
moved text files to new directory
moved display logic to new file. edited combine_records accordingly and added sorted_json method
made minor naming changes to parser and parser_spec
edited person class and added tests for it
added initial tests for api
refactored CombineRecords class into PersonCollection class
refactored person class
refactored and added tests for api class
added and refactored tests. changed combine_records_spec to person_collection_spec
added and refactored tests for parser class
added and refactored tests for person class