Adds control to set the animation origin point.

The default option is now the first keyframe.

Squashed commit of the following:

commit 64b1ee450edb8484c133bd3184f90bb3a5a02e20
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 17:38:29 2013 -0600

    Moves orientation control to CSS pane.  Makes first keyframe the default.

commit d66390ff10c892206ad68d6edafd35cd2473f60a
Merge: 6d4885a a245b6c
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 17:20:14 2013 -0600

    Merge branch 'orientation-select' of github.com:jeremyckahn/stylie into orientation-select

commit 6d4885a310cd6d3dc9447fc7b8049fbe94f68b52
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 12:06:31 2013 -0600

    Switches to a simpler offset algorithm.

commit 3795bc6faa751e93eec3a1318b19bcf688e606dd
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 11:15:13 2013 -0600

    Adds Kapi extension stub and adds logic to fork which Kapi instance gets exported.

commit dd3c2b4f2937d4c0de9bf9694dff52eb6a837952
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 10:37:43 2013 -0600

    Adds orientation form DOM, CSS and View.

commit a245b6c09d524be15df0916e1afa6c42800cd0d8
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 12:06:31 2013 -0600

    Switches to a simpler offset algorithm.

commit 961b2bac4f2258b2b33e6fc7186af1b53d5e940e
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 11:15:13 2013 -0600

    Adds Kapi extension stub and adds logic to fork which Kapi instance gets exported.

commit cf589f1131e6a71e73109ad2c0bf30a6c48f227d
Author: Jeremy Kahn <jeremyckahn@gmail.com>
Date:   Sat Nov 16 10:37:43 2013 -0600

    Adds orientation form DOM, CSS and View.
Builds binaries and increments to v.0.4.2.