Organize sky/framework a bit

Organize sky/framework a bit

- Removed out-of-date README.md
- Moved fling-curve into the animation directory because it's part of the
  animation behavior of the system.
- Moved view-configuration into the theme directory because it's a collection
  of constants similar in flavor to the colors and the shadows. Eventually
  we'll want to make the theme configurable and have these all together will
  hopefully make that easier.
- Moved dom-serializer into tests/resources because it is used only by tests.

R=eseidel@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/46adf9299a6b2c5040e50f5522ddee5c36b22bc7

[eseidel, 2015-03-05 17:56:03]

lgtm

[abarth-chromium, 2015-03-05 17:59:54]

Committed patchset #1 (id:1) manually as
46adf9299a6b2c5040e50f5522ddee5c36b22bc7 (presubmit successful).