SVG to PNG conversion functionality added.
Merge pull request #6 from meghanlarson/master

Remove unused adapter
Merge pull request #5 from mohit-agarwal/issue_svg_to_png

SVG to PNG conversion functionality added.
Latest changes committed.
Dead code removed.
Merge pull request #10 from mohit-agarwal/png_imagemagick

Hi Mohit,

Thanks for doing this work. One thing: it would probably have made more sense to put a new function in the MathoidService for latex instead of creating two separate classes. 

Thanks!
Meghan