Merge pull request #39 from tomasrudh/Memory-leak

Memory leak

Update README.md

Merge pull request #36 from tomasrudh/Eliminate-Moment.js

Eliminate Moment.js

Update analogclock.js

Merge pull request #35 from tomasrudh/Performance-and-colors

Performance and colors

Added error texts

Bugfix

Changed the way Date is initialized

New features

Added themes