update tests
Merge pull request #79 from AlexanderPico/master

fixes wikipathways/pathvisiojs#78
updated tests. code now passes all tests defined so far.
Merge branch 'master' of https://github.com/wikipathways/pathvisiojs
updated tests. still passing all tests
Merge pull request #6 from wikipathways/master

update ap:master with latest work and builds from wp:master