Change log: * Version 0.1.3: May 2015 -Bug fix for syntactically invalid column names. -Added a verbose parameter * Version 0.1.2: April 2015 -Bug fix for data frames with only one character or factor. * Version 0.1.1: November 2014 -Bug fix for single columns. * Version 0.1.0: November 2014 -Package submitted to CRAN.