Adds functionality to replay the last drawn path animation at will. Could be used with a button to allow a user to replay the animation if they need it.
Added support for optionally zooming in on the section of route being animated. Useful for giant buildings such as ours, where a fully zoomed out map is a lot to take in.
Merge pull request #10 from japorito/master

Adds function which replays the animation when it is called, and zooming functionality