Change raise to fail.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Remove trailing commas.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Use $LOAD_PATH instead of $:.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add a RuboCop configuration file.

Don't complain about the copyright symbol in comments, and always use hash
rockets instead of the Ruby 1.9 syntax in order to ensure the code works on
1.8.7.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>