Added text area support for mdTextFloat directive

[EnoF]

• Extracted the link function of the mdInputDirective to reuse it for the mdTextareaDirective
  -mdTextarea is configurable with rows and cols, but behaves the same as mdInput

[vergun]

LGTM, once the tests pass let's merge

[EnoF]

Awesome, but am I supposed to do something different? I don't think I can do something about this error:

-- Pushing to bower-material...
remote: Invalid username or password.
fatal: Authentication failed for 'https://angular:@github.com/angular/bower-material/'
The command "./scripts/travis-build-init.sh --sha=$TRAVIS_COMMIT" exited with 128.

[erbear]

I wonder, what is the point of copying mdInputDirective if you can add

template: function(element, attr){
      isTextarea = element.parent().attr('type') == "multiline";

      if (isTextarea)
        return '<textarea rows="1"></textarea>'
      else
        return '<input>'
    }

to mdInputDirective template field
With this solution, textarea will look like input, with autoexpanding feature to add

[marcysutton]

This needs to be tested for accessibility and reviewed by the team before being merged to master.

[ajoslin]

@EnoF I just fixed Travis trying to push on pull requests. If you force-push again it will pass properly.

I don't think this approach for inputs and textareas that we're taking now is going to work in the long-term though ... I'll open a separate issue about it.

@erbear I'm a big fan of your idea! This is something that we should take a look at.

[ajoslin]

Opened #547.

I want to fix this problem before we add textarea too. Thanks for the contribution, but we won't end up going with this approach.

[EnoF]

@erbear I wasn't aware of this way of adding a template :)

New implementation:

<md-text-float rows="4" cols="50"
                            type="textarea"
                            label="{{labels.intro}}"
                            ng-model="user.intro">

Should I create a new issue or can we reopen this ticket?
New commit sha: d41be52