Create Crossreference Spreadsheets.py

Example usage:

spreadsheet_one_as_dict = CSVtoDict(file1)
spreadsheet_two_as_dict = CSVtoDict(file2)

or 
spreadsheet_one_as_dict = XLStoDict(file3, "int")
spreadsheet_two_as_dict = XLStoDict(file4, "int")

then:

print list(CrossReferenceSpreadsheets(spreadsheet_one_as_dict, spreadsheet_two_as_dict, ["pawn", "rook", "queen", "sddd"]))