Update to new fork

Please help work with this PR to bring your contributions to chart.js to the latest support "canonical" fork of the project.

As you may know, nnnick from chart.js has disappeared and there are many people still working on the project with their PRs and issues to nnnick being ignored.

Please help by carefully and manually merging your fork with the fulldecent/chart.js MASTER branch. At this time we are hoping to collect incremental work (not rewrites) into the fulldecent/chart.js MASTER branch and continue discussion at that project about how to move forward. Progress so far is:

* Travis CI set up and first unit test passing
* Realistic and achievable Project Goal is defined
* Added animated screen shots to readme.md

And there is more discussion on the new fork at https://github.com/nnnick/Chart.js/issues/356