basic tests working
tests readme: add to-do list
tests: use PhantomJS instead of Firefox webdriver
grunt task for running tests
grunt task to generate cache manifest
tests: remove unneeded Selenium boilerplate

speeds up tests even further, from ≈3s to ≈2s
remove unused Compass Grunt tasks
update link to GitHub Pages
no cornify_add if offline - fixes #6
script to zip up Chrome app
add *.zip to .gitignore
move version scripts to scripts dir

note change in readme
also, convert "and"s to &
Merge branch 'master' into chrome-app

* master:
  move version scripts to scripts dir
  add *.zip to .gitignore
  script to zip up Chrome app
  no cornify_add if offline - fixes #6
  update link to GitHub Pages
  remove unused Compass Grunt tasks
  tests: remove unneeded Selenium boilerplate
  grunt task to generate cache manifest
  grunt task for running tests
  tests: use PhantomJS instead of Firefox webdriver
  tests readme: add to-do list
  basic tests working
ver.sh: exit with error code 1 like a good UNIX tool
ver.sh: update path to version.js