Create Useful associative array example.ck

This is actually pretty cool, especially for messing with scales in a slightly more human-readable way.
Plus the associative array examples in the ChucK docs really suck.
Merge pull request #3 from tildebyte/master

Create Useful associative array example.ck

also know that i've written a function that does this too:
https://github.com/zeffii/ChucKScripts/blob/master/utility_functions/common_functions.ck#L187-L209