Redis MDEL command

To delete a key from Redis you have the DEL command.  Very fast and works great.    Now I had to delete a bunch of keys from Redis and guess what there is no MDEL command.  Now the choices are that I can do a KEYS <pattern>* (in the older versions) or the new SCAN calls.  Add Lua to that mix and we can create our own MDEL command.

I have uploaded the file to a gist at

https://gist.github.com/vivekhub/1f84d888edaabafb17a5

Feel free to try it out and submit any comments / changes on the gist.