low poly style background generator with snap.svg.js
@author: qrohlf (https://github.com/qrohlf/trianglify) - original project has d3.js
It was inspired by btmills/geopattern, and uses snap.svg.js to build the polygons and SVG and SVG filters for rendering. It also includes the colorbrewer color palette library to get you up and running quickly.