Add package.json for firefox addon
Add firefox path to cakefile
Add spockhub.js to firefox path
Remove main.js, set spockhub.js as main
Move spockhub.js to data folder in firefox ext

Add main.js
Add data variable, firefox extension works
Add .gitignore
Add firefox install guide
Merge branch 'firefox' into 0.2.0-development

* firefox:
  Add firefox install guide
  Add .gitignore
  Add data variable, firefox extension works
  Move spockhub.js to data folder in firefox ext
  Remove main.js, set spockhub.js as main
  Add spockhub.js to firefox path
  Add firefox path to cakefile
  Add package.json for firefox addon
Bump version in Safari extension