Basic skeleton/pseudocode for analyzing csv files.
Basic logic to read inputs.

Method for matching records will read in the CSV file and convert each row to a hash.  Parses input to only the keywords 'phone' and 'email' and redirects to appropriate method.  TODO: methods for matching phone and email, error if invalid CSV file entered.
Basic functionality for email matching.

Matches email for input1, based on one email column.  TODO: implement matching based on multiple columns using same logic.  Also todo: throw error if not csv file.
Basic functionality for matching phone number.

Similar logic to basic email matching, regex matches standard 10/11 digit phone numbers.  TODO: error if not csv, more complex matching if more than one phone/email column.