feat(umd): uglify the umd bundle

[izifortune]

Umd bundle will be minified using the following rollup plugin:
https://github.com/TrySound/rollup-plugin-uglify

[jvandemo]

@izifortune — Awesome, thank you for your contribution!

Is it possible to generate 2 versions of the UMD bundle?

• *.umd.js: non-minified UMD bundle
• *.umd.min.js: minified UMD bundle

That would be similar to how Angular Material generates bundles:
https://github.com/angular/material2-builds/tree/master/bundles

Would you be able to do that? Thanks again! 👍

[izifortune]

@jvandemo i had to create another gulp task for this hope you don't mind.

[chrisalexander55]

Curious why this hasn't been merged into current master? Thanks!

[jvandemo]

@izifortune — I'm sorry, I missed your update. I will check it later this week and merge if all works as expected.

Thanks again for your contribution! 👍 /cc @chrisalexander55.

[izifortune]

@jvandemo no worries happy to help :)

[fishme]

when is that cool feature available?

[izifortune]

Resolved conflicts

[jvandemo]

@izifortune — Looks like there is still a conflict. Would you be able to resolve it? If not, I can have a look at it as well. Thanks again! 👍