Fixed badges publishing on npm again

v0.1.4

chore: version 0.1.4

Fixed badges publishing on npm

Just fixed badges appearance in the README on npm.

Fixed demo app, added coverage stats

Added more unit tests (now 100% unit test coverage!).
Added Jest for measuring tests coverage.
Added Jest coverage badges to the README.md.
Fixed and improved the demo app.

Updated README

Updated README: added link to documentation.
Modified demo app.

Initial release

v0.1.0

chore: README.md