Merge pull request #57 from azai91/feat/db

(bug) fixed getTree to return array of roots. closes #50
I approve this fix
(feat) Add panning and zooming. Closes #29
Merge pull request #59 from noodle/master

(feat) Add panning and zooming. Closes #29
Awesome SACUE
(feat) Adds landing page with logo. Closes #43
Merge pull request #61 from bethjohnson/feat/landingPage
(fix) selection and adding new topic fix.
Merge pull request #65 from christophertrev/bug/selecting
(docs) Added gulp file to create docs and first round of Docs
Merge pull request #67 from christophertrev/doc/setup

Doc/setup Closes #66
update package.json
add clearDB