Merge pull request #37 from bnchdrff/gh-pages

increase link stroke width on hover
Merge pull request #38 from bnchdrff/gh-pages

Add function to zoom & pan graph to show a node and its n-degree neighbors
remove legend, refs #26
move all widgets to left side
auto-fit height
Merge branch 'jessicamcinchak-gh-pages' into gh-pages