adding contour option to command line
added tests for invalid contour strings
added tests for contour_info::is_valid(), added place-holder for is_valid() method
adding is_valid() to contour
putting contour_info in anon namespace
updated contour_info to pass parameter values
place holder for contour command
refactored write_unconstrained_csv_header() to build a vector<string> first
wrote header for contour info
outputing contour info