Add more... button

[gkchestertron]

This project uses semver, please check the scope of this pr:

• [ ] #none# - documentation fixes and/or test additions
• [ ] #patch# - backwards-compatible bug fix
• [ ] #minor# - adding functionality in a backwards-compatible manner
• [x] #major# - incompatible API change

Closes #87

CHANGELOG

• Added "More..." button
  • Added default behavior that collapses extra buttons when more than 4
  • Added ability to override default
  • Added docs for "More..." button
  • Added ability to change text of "More..." button
• Added alwaysVisible flag to frost-action-bar

[gkchestertron]

look good John, we noticed a small discrepancy with Style Guide as follows:

[notmessenger]

I understand that the action bar is intended to work with frost-button components and it is the component we use within the Frost ecosystem but I'm not sure I like the idea of looking for that component type specifically. By doing so we force the usage to require frost-button rather than only needing to be passed a component. Even if we take such "meta" support off the table for this discussion how does this code hold up if an application has extended the frost-button component and is using it instead?

[notmessenger]

Please create an issue indicating that the Ember 2.8-specific introduced in this PR can be removed once no longer supporting Ember 2.8

[gkchestertron]

@notmessenger, your comment about being specific to frost-button is a good point. I was specifically trying to avoid wrapping up links or other dropdowns because this feature is for wrapping up actions. Perhaps I could generalize it to components that have and onClick property.

[notmessenger]

That might be an interesting approach to the problem

[notmessenger]

👍

[notmessenger]

👍