Minor cleanups

Renamed VERSION to MYVERSION, avoiding clash with Ruby reserved word.
Fixed typo in error message.
Deleting outdated man page, as new man page can be generated at will by running make.

Signed-off-by: Josh Lehan <krellan@krellan.net>
Merge pull request #1 from Krellan/cleanup

Minor cleanups. Thanks to  Josh Lehan