Added config-provider

[zlodes]

Example:

angular.module('chosenExampleApp', ['localytics.directives'])
    .config(['chosenProvider', function (chosenProvider) {
        chosenProvider.setOption({
            no_results_text: 'Haha! There is no results!',
	    placeholder_text_multiple: 'Choose a few!'
        });
    }]);

[zlodes]

@leocaseiro, hi! There is cool feature!

[leocaseiro]

Hi @zlodes, thanks for sending this PR. I'll have a deep look next week, so I can publish within the next release.

[leocaseiro]

Release 1.6.0!!!

🎉 🍺