Merge pull request #1 from nickweinberg/master

add LinkedList scaffolding
Update the Where section
Create app variable to shorten boilerplate
Use new app variable and adjust visualization config
Add boilerplate for viz config service.

The service will contain config data that can be used across
multiple visualizations (which are different controllers).
Merge branch 'master' of https://github.com/RebootJeff/DiscoverDataStructures

Conflicts:
	scripts/app.js
Add script tag for VizConfigService
Complete first draft of VizConfigService
Refactored to use VizConfigService
Refactor to use VizConfigService
Switch file name to camel case
Change text input class name to be more generic
Revamp README with ToC and tips for contributing
fix merge conflict