Added support for viz:color tag in edges
Added support for viz:color tag in edges

danpaulsmith/gexf-js,kwetril/kwetril.github.io,rshiggin/gexf-js,rshiggin/gexf-js,raphv/gexf-js,danpaulsmith/gexf-js,kwetril/kwetril.github.io,rshiggin/gexf-js,raphv/gexf-js,raphv/gexf-js