added jshintrc and fixed initial bugs to clear up errors.  some errors still exist in app_handlers.js
updates to config and app_handlers.js.  jshint now passes.
updated build script to perform jshint. removed commented-out lines in .jshintrc to make valid JSON
updated readme to include jshint install
Merge pull request #78 from OpenF2/issue74

Adding JSHint to project