Merge pull request #150 from wcjohnson11/master

Basic Timeline
Merge pull request #151 from wcjohnson11/master

naive axis
removed extra console.logs
Merge pull request #153 from wlabranche/code-cleanup

removed extra console.logs, closes #114
Add legend to meta pie chart
Merge pull request #154 from MSchip/front-end-refactor

Add legend to meta pie chart
improve physics