Support for other elements

[danielmee]

Illustrator makes use of 'path' and 'g' elements when creating SVG files. I couldn't work out why this solution wasn't working for me and then it worked once I added g to the svg tag names. I added path too but I am not sure if that works the same or if there are other elements that could be added to lessen the headaches of some :)
svg_tag_names = ['rect', 'circle', 'ellipse', 'line', 'polygon', 'polyline', 'g', 'path'];