fix(rating): hyphenate read-only attribute

src/rating/docs/demo.html

@@ -1,6 +1,6 @@
 <div ng-controller="RatingDemoCtrl">
     <h4>Default</h4>
-    <uib-rating ng-model="rate" max="max" readonly="isReadonly" on-hover="hoveringOver(value)" on-leave="overStar = null" titles="['one','two','three']" aria-labelledby="default-rating"></uib-rating>
+    <uib-rating ng-model="rate" max="max" read-only="isReadonly" on-hover="hoveringOver(value)" on-leave="overStar = null" titles="['one','two','three']" aria-labelledby="default-rating"></uib-rating>
     <span class="label" ng-class="{'label-warning': percent<30, 'label-info': percent>=30 && percent<70, 'label-success': percent>=70}" ng-show="overStar && !isReadonly">{{percent}}%</span>
 
     <pre style="margin:15px 0;">Rate: <b>{{rate}}</b> - Readonly is: <i>{{isReadonly}}</i> - Hovering over: <b>{{overStar || "none"}}</b></pre>

src/rating/docs/readme.md

@@ -26,7 +26,7 @@ Rating directive that will take care of visualising a star rating bar.
   _(Default: `null`)_ -
   An array of objects defining properties for all icons. In default template, `stateOn` & `stateOff` property is used to specify the icon's class.
 
-* `readonly`
+* `read-only`
   <small class="badge">$</small>
   <i class="icon-eye-open"></i>
   _(Default: `false`)_ -

src/rating/rating.js

@@ -85,7 +85,7 @@ angular.module('ui.bootstrap.rating', [])
   return {
     require: ['uibRating', 'ngModel'],
     scope: {
-      readonly: '=?',
+      readonly: '=?readOnly',
       onHover: '&',
       onLeave: '&'
     },

src/rating/test/rating.spec.js

@@ -125,9 +125,9 @@ describe('rating directive', function() {
     expect(element.attr('aria-valuemax')).toBe('15');
   });
 
-  it('handles readonly attribute', function() {
+  it('handles read-only attribute', function() {
     $rootScope.isReadonly = true;
-    element = $compile('<uib-rating ng-model="rate" readonly="isReadonly"></uib-rating>')($rootScope);
+    element = $compile('<uib-rating ng-model="rate" read-only="isReadonly"></uib-rating>')($rootScope);
     $rootScope.$digest();
 
     expect(getState()).toEqual([true, true, true, false, false]);