fix(chips): sets md-autoselect for contact chips

Closes #2294

Author: Robert Messerle

src/components/chips/js/contactChipsDirective.js

@@ -59,6 +59,7 @@
               md-items="item in $mdContactChipsCtrl.queryContact($mdContactChipsCtrl.searchText)"\
               md-item-text="$mdContactChipsCtrl.mdContactName"\
               md-no-cache="$mdContactChipsCtrl.filterSelected"\
+              md-autoselect\
               placeholder="{{$mdContactChipsCtrl.contacts.length == 0 ?\
                   $mdContactChipsCtrl.placeholder : $mdContactChipsCtrl.secondaryPlaceholder}}">\
             <div class="md-contact-suggestion">\