slider value reset gesture

Hi there, Erwin --

I love Transformifier!  

Just what I was looking for, to experiment with various Core Animation settings.  Pretty brilliant, nicely done.

For what it's worth, I just added a small feature from my own wish list: the ability to easily reset an individual slider to its default.  Simply double-tap that slider.

I hope this is useful, and worth sharing with others.

Thank you!

Best,
Ron Diamond
Los Angeles