bump to 0.0.2
more exception handling
invalidHeader test
testing invalid mappings
added test for non unique header cells
testing columns without header
testing empty cells in defined cols get ignored
renamed xlsx test file and added testfile with an empty row
added test for empty rows
Comments on facade XlsxToBeanConverter
added comments to the main facade and annotation
bump to 0.0.2
Merge branch 'release-0.0.2'