Merge pull request #13 from ixmatus/master

Warning on "Reason" var being unused
test commit
removing test file
parse code and sqlstate from error packet and check for error packet in get_rows (for sql funcs that raise errors)
Merge pull request #14 from mlewis033/master

some additional error handling
Make DB Name safe in USE statement
Merge pull request #15 from zcs/master

Make DB Name safe in USE statement
Merge branch 'master' of https://github.com/dizzyd/erlang-mysql-driver