Implement four message cycle functions that allow longer messages to be displayed in the four seven+ segment display portions.  A list of messages fragments is passed to each function and these fragments are displayed sequentially via a timer.

Also added a new example program indicating their use.
Add extra comments to the message cycle example explaining what each is attempting to do.
Clean up the delay call so it doesn't use what are effectively global variables and functions.
Merge branch 'master' of github.com:rinstrum/LUA-LIB