Remove tracked dependencies

[dellagustin]

Dependencies were being tracked despite the .gitignore and the postinstall script.

With this PR, the tracked dependencies are removed.
The .gitignore rules were updated to ignore everything in the lib folder except for the README.md file.

[spier]

Great find!

Do you have any suspicions why the .gitignore file didn't work as expected? Just curious.

[dellagustin]

Hi @spier, I suspect that the .gitignore rule was added after the files were already tracked (that could be verified on the history, but I did not went that far).

[Michadelic]

the libs are needed for the gh_pages online demo at the moment as we don't have a build step in place on this repo.

[Michadelic]

Hi @dellagustin, these files are checked in intentionally as we do not have a build step for gh_pages currently. While they are not needed for a local setup (postinstall step is taking care of it) this would break the online demo. It could be achieved by setting up a travis job however.