Merge pull request #14 from sole/master

Add build instructions
Clean up the README instructions a bit
Add locale build step to makefile
Add note about gettext
Ditch some unneeded node libs
Simplify Makefile
Comment code in main app.js
Add an override for locale
Add mini-manifest make command
Add manifest installer
Ignore Podcasts zip file in www-manifest
Rename install file
Add server for install
Add FxOS deviceStorage DataStore (unused for now)
Privileged apps can't be installed over network
Restore ajs-xgettext in package.json
Tweak README formatting
Scratch that; no ajs-gettext needed
Update locale files
Add locale make steps