add link buttons

[miguelcobain]

It should be trivial to add link support to buttons right now.

Example: https://ember-twiddle.com/#/6265da0fd9a1252423b383d3e33ddaf3?openFiles=components.my-component.js%2Ctemplates.components.my-component.hbs

[joukevandermaas]

Also see #207 for a somewhat related discussion.

[miguelcobain]

To cover link-to functionality we're using https://github.com/peec/ember-transition-helper
Is that acceptable for the recommended solution?

[DanChadwick]

I'm confused. Your button-turned-into-an-a-link component looks like an a link. I was under the impression that the only way to make a browser actually process an href was inside an a link, and with AM CSS, a links don't look anything like buttons. Are you suggesting that we add a bunch of e-p specific CSS to accomplish this?

[miguelcobain]

@DanChadwick AM does have link buttons (buttons with an anchor tag): https://material.angularjs.org/1.0.6/demo/button

Turns out the styles are also applied to a tags.

The idea is to make paper-button use a tagName: 'a' if an href is present, like the linked twiddle suggests. We don't need another component.

[DanChadwick]

Closed in favor of discussion in PR #372