Passing tree to the index function.
Added a rough example of an HTML table.
Merge branch 'master' into html-tree-index
Added the table header.
Merge 'master' into html-tree-index.
Restored stop options.
Merge branch 'master' into html-tree-index
Merged branch 'master' into branch 'html-tree-index'.
Updated table style.
Updated expected HTML.
Fixed coverage.
Fixed typo.
Added table styling.
Added Scrutinizer and Gittip badges.
Added method to draw tree structure.
Added tree structure to the index.
Added traceability to `index.html`.
Merge pull request #20 from jacebrowning/html-tree-index

Show tree structure on `index.html`
Update CSS to highlight link targets.

Also, fixed mocking in a test.
Refactored common functionality.