Prepare for version 1.4.0

Added 1.3.1 release notes

Added release notes to README

Create release 1.2.0

Commit changes for release 1.1.0

Issues #85 and #84 now includes a non minified version and changed ve…

…rsion to 1.0.1

Prepare for 1.0 release

fixed issue #62

Changed readme for version 0.7.0

Solution for issue #26, now a callback can be provided to receive the…

… chart object.