add conditional update for ML

mv render_ml.js to ML.js
add description of ebony into index.html
Merge pull request #4 from jamesruan/master

update ML add description into index.html
fix mkStr() bug: non-standard use of replace()
Merge pull request #5 from jamesruan/master

fix mkStr() bug: non-standard use of replace()
adjust color for ebony color-front
Merge pull request #6 from jamesruan/master

adjust color for ebony color-front
update color for heading