Remove watch from beefy runner.
Added tests to check for adding of dependencies

Checks for adding the dependency to the graph object and to the
rendered display
Added initial modal implementation.
Fixed tests for adding a dependency

Note that adding a dependency affects the list of dependencies attached
to a concept object, so it needs to be reset before each test
Fixed removing dependencies tests

Note that transitions cause the edge not to be removed immediately
So we added a config setting to change the duration of transitions
Updated modals plugin for content display

If content title not specified in the graph, modal will default
to empty title instead of displaying "undefined"
Changed node enter/exit points to semi circles
Changed example demo to have text content
Merge branch 'aethstetics' into modals

Conflicts:
	package.json
Added CSS for modals plugin
Altered appearance of modal close buttons
Added highlighted color for anchor tags
Tweaked modal content style

Changed heading size and spacing
Made text lighter
Increased the size of the modal
Merge pull request #7 from knowledge-graph/modals

Modals
Merge pull request #8 from knowledge-graph/more-tests

More tests
Merge branch 'master' into gh-pages

Conflicts:
	dist/css/knowledge-graph.css
	package.json