Merge pull request #3 from wikipathways/dev

Dev
Update pathway-template.svg
updated comments
working on double lines for nodes. code presently isn't functional
working on double lines for nodes. code is functional with the 'double strokeWidth of original node and draw second node of background color on top' method
double lines are now working for shapes, datanodes and labels
updating groups to display complex correctly
complexes are now displaying with constant corner cut-off sizes
complexes are now displaying with constant corner cut-off sizes
some pathways needed dashed lines
update demos
change viewer link on demo
update build
updates
updated link to pathvisio.js
Update pathway-template.svg
Update pathway-template.svg
Update pathway-template.svg
Update pathway-template.svg
Update pathway-template.svg