FIX for issue 1024
The automated test script can now handle a file with a space in the name.
Merge pull request #1042 from umsmit32/issue-1024



The automated test script can now handle a file with a space in the name.

Instead of joining and splitting the argument list with a space, I decided to use a colon (:). Colons can't be used in filenames on Windows and Mac operating systems so there is unlikely to be an issue in the filename getting split up as there was with splitting on whitespace.
Closes #1024