code and github issues updated

[venkateshpotluri]

I created github issues from the big work-items discussed in today's meeting. Here are the issues:

• implement support for data processing using Arquero or other libraries. #22
• sonify (Web Audio) #23
• UI (react, react-vega) #24
• re-factor some code as an example for future refactorings. #25
• Enable github pages and upload built projects #18
• Move vega specs to a file #17
• Add demo page that uses jacdac to import live data #16

tagging @jmankoff @jamesadevine @pelikhan @jrthompson33 to notify.