Simplifies and improves memory usage of Interpolate module.

Removes configuration object syntax for Tweenable.interpolate.

Removes Tweenable.prototype.interpolate.

Squashed commit of the following:

commit a4f204bbeee8c50cd7d99c1813f37a698d57e1b7
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Sep 3 21:22:02 2013 -0700

    Shows interpolate source in docs and rebuilds.

commit 98bc07df165051f86f24514e2bd6ad3b7dba495f
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Sep 3 21:18:37 2013 -0700

    Builds 0.11.0.  Updates Helix demo for API changes.

commit 9e1d09d39f03f17926e60fb2fa9cffbc74ba4663
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Sep 3 21:11:48 2013 -0700

    Optimizes some array allocations in interpolate module.

commit 2bda8a690a5a2a55e0449319f3e0eca034b17a88
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Tue Sep 3 21:00:23 2013 -0700

    Removes configuration object syntax for Tweenable.interpolate.

    Removes Tweenable.prototype.interpolate.

    Removes dead code in interpolate file.