VID-1271 Added a --category parameter
VID-1271 Simplified code, added docs
VID-1271 Saipetch imposed formatting!
VID-1271 Update comma separated to semicolon separated

We need semicolons because they are one of the only characters that cannot appear in a category name
Merge pull request #2653 from Wikia/VID-1271

VID-1271 Added a --category parameter