Multi-model support

Release v0.2 includes:

• Multi-model support with live switching between models
  • CocoSSD and Posenet are supported
• Complex eye design with bezier curves and blinking animations
• Advanced object tracking with momentum prediction

Plain JS version

• initial conversion

• improved readability

• added object tracking via detect.js

• removed empty detect.js

• removed extraneous code

• modified object recognition to only track people

• almost implemented dual webcam

• spaced out the styles.css file

• fixed asynch issues

• Tidied up index.html

• Refactored. Fixed single-webcam functionality.

• removed global constants from frame_feed.js

• renamed some stuff

• Minor refactoring and quality of life changes

• updated index.html and style.css according to comments

• modified file structure to fit merge with master

• modified ids to be scoped and modified getTrackingTarget() in framefeed

• modified d3js script link to use ssl

• managed variable assignment