Merge pull request #1 from goinvo/healthscore_prototype

Adding Basic Health Score algorithm
Merge pull request #2 from goinvo/healthscore_prototype

V0.2 of hScore Algorithm
Merge pull request #3 from goinvo/healthscore_prototype

Healthscore prototype v0.3
Added hGraph design walkthrough pdf
Added start of hGraph mixer code
new version. d3.js dependency
Restructure mixer folder. Included the demo page code
Updated mixer.js
Added updated code from gh-pages
Changing saferange and safe_range to healthyrange and healthy_range
Updating this json to match gh-pages branch
code from gh-pages brought over
Code cleanup..
Changes brought over from gh-pages
Merge pull request #1 from goinvo/master

Pull from goinvo/hGraph
Testing metrics.
initial commit of rails app code
adds user, metric, submission models
adds tests controller
incremental update