Enable travis ci builds

[lb1a]

I've added the travis.yml needed for automated testing with travis.
I've used the latest stable nodejs and the latest stable node js LTS version als build targets, with the custom build command.
You can see the output here: https://travis-ci.org/lb1a/ole2
And of course they offer nice badges 😄

[lb1c]

Travis Deployment does not handle files ignored by .gitignore. So the page build will always be missing the generated/downloaded files in dist and node_modules.
Problem documented here: travis-ci/travis-ci#4006
Workaround is either removing the folders from gitignore or using a custom deploy script:
https://github.com/felixrieseberg/travis-jekyll-git

[lb1a]

@mhaertwig
The build is working, but pushing to gh-pages with the node_modules folder fails, because the deps include an *.exe file.
This gets blocked by github. Could you please clarify which files are actually needed in the deployment?

The page build completed successfully, but returned the following warning for the gh-pages branch:

It looks like you're using GitHub Pages to distribute binary files. We strongly suggest that you use releases to ship projects on GitHub. Releases are GitHub's way of packaging and providing software to your users. You can think of it as a replacement to using downloads to provide software. We found the following file(s) > which may be a good candidate for releases: node_modules/closure-util/.deps/library/0f95ad8150b77cd8db0e8d9e9726292ab33580af/scripts/ci/CloseAdobeDialog.exe. For more information, see https://help.github.com/articles/about-releases/.

For information on troubleshooting Jekyll see:

https://help.github.com/articles/troubleshooting-jekyll-builds

[lb1c]

Closing messy PR, recreating cleaned PR