Corrected a bug concerning command parsing.  Punctuation was parsed with the
command which caused invalid rendering behavior.  I've noticed that many of the
php string functions utilized in the original code are single byte functions.
This may cause a problem when the string is in unicode that requires double
byte operation. Also, preg_match and ereg_match both hangs my version of
Dokuwiki.  As a result, I was not able to use these functions.
Minor change related to last bug fix.
Merge pull request #3 from yvonnel098/master

USFMTag bag fix