Multiple updates.  Added L.Callout, L.FlowLine and related classes.  Updated examples to use latest Leaflet version (0.6).  Updated SVGPathBuilder and some of the utility functions to better support older browsers (thanks to Keith Chew).  Added code to support removing gradients and drop shadows (thanks to Jeff Meadows).  Added CONTRIBUTORS.md file.  Updated README.md
Create gh-pages branch via GitHub
Re-added images
Updated images
Updated images
Create gh-pages branch via GitHub
Updated images
Create gh-pages branch via GitHub
Create gh-pages branch via GitHub
Merge branch 'gh-pages' of https://github.com/humangeo/leaflet-dvf into gh-pages