Added basic scripting support:
You define groups of actions to perform. These groups have a delay which is how long it will wait before being executed after the last group. The contents of a group are executed in the order that they are written. These scripts must be put in the 'SuperSigns/scripts' directory.
Format:
@<delay in millisecons from last group>
<sign> <action> <args>
<sign> <action> <args>
<sign> <action> <args>
...

Actions are:
align <left|center|right>
font <name>
material <type>
draw
clear
text <text>
change <effect> <speed> <text>