Merge pull request #2 from tagawa/docs

Updated readme and added license
Merge pull request #3 from tagawa/docs

Quick fix to readme
Small edits to support IE
Merge pull request #4 from tagawa/browser-support

Small edits to support IE
Added version number
Added version number
Added missing semicolon
Merge pull request #5 from tagawa/small-edits

Added version number
Added browser support details