Merge pull request #11 from tracend/master

supporting Analytics.js
Made library auto detect environment and initialize appropriately
Merge pull request #13 from juriejan/multi-platform

Made library auto detect environment and initialize appropriately
Create package.json
Create .npmignore
added backbone to package.json
move to version 1.0.0
updated README; added NPM install; removed contributors, getting difficult to track all of them
removed backbone from package dependencies
fixing analytics.js support
readme update
direct lookup for window.ga