Ensure png filename on export if missing

Disable copying root styles

Update README.md

Remove canvg submodule

Add 'gulp clean'

s/prybar.all/prybar.bundle/

Update README.md

Add bower.json

Remove symlinks in example

Add package.json and gulpfile.js

Add bg image drawing

Do not write empty style tags

Optimize SVG style inlining

Add radio buttons for options

Add exporter option for SVG