Will now respond if you spell the username in lower case
When you would mention the users name in the chat in lower case
you would get no response.

This solves the above issue, but dose not handle if the name
was mention in CAPS. I don't see the usage for yelling in chat so
I didn't include this.
Changed the if to a more logical statement.
Thank you - @jonursenbach
Merge pull request #1379 from andreicek/master

Will now respond if you spell the username in lower case