Fix needed for dependency injection

[jquinter]

As recommended in this famous guide, dependency injection should be explicit, not using shortcut syntax

https://github.com/johnpapa/angular-styleguide#manual-annotating-for-dependency-injection

This happened with the master version of angular-confirm: using a processor (grunt concat) and minification (grunt uglify), the angular-confirm.js file transformation resulted in many errors.

This pull request fixes this issue.

[jameskleeh]

@jquinter I included a minified version for this reason. I personally use a pre processor to do this work for me