Use beta versions (#165)

* Add missing import for vaadin-radio-group

* Update elements to beta versions

bower.json

@@ -24,26 +24,26 @@
     "**/tests"
   ],
   "dependencies": {
-    "vaadin-button": "vaadin/vaadin-button#2.0.0-alpha6",
-    "vaadin-checkbox": "vaadin/vaadin-checkbox#2.0.0-alpha7",
-    "vaadin-combo-box": "vaadin/vaadin-combo-box#4.0.0-alpha6",
-    "vaadin-context-menu": "vaadin/vaadin-context-menu#4.0.0-alpha6",
-    "vaadin-date-picker": "vaadin/vaadin-date-picker#3.0.0-alpha6",
-    "vaadin-dialog": "vaadin/vaadin-dialog#2.0.0-alpha5",
-    "vaadin-dropdown-menu": "vaadin/vaadin-dropdown-menu#1.0.0-alpha10",
-    "vaadin-form-layout": "vaadin/vaadin-form-layout#2.0.0-alpha6",
-    "vaadin-grid": "vaadin/vaadin-grid#5.0.0-alpha7",
+    "vaadin-button": "vaadin/vaadin-button#2.0.0-beta1",
+    "vaadin-checkbox": "vaadin/vaadin-checkbox#2.0.0-beta1",
+    "vaadin-combo-box": "vaadin/vaadin-combo-box#4.0.0-beta1",
+    "vaadin-context-menu": "vaadin/vaadin-context-menu#4.0.0-beta1",
+    "vaadin-date-picker": "vaadin/vaadin-date-picker#3.0.0-beta1",
+    "vaadin-dialog": "vaadin/vaadin-dialog#2.0.0-beta1",
+    "vaadin-dropdown-menu": "vaadin/vaadin-dropdown-menu#1.0.0-beta1",
+    "vaadin-form-layout": "vaadin/vaadin-form-layout#2.0.0-beta1",
+    "vaadin-grid": "vaadin/vaadin-grid#5.0.0-beta1",
     "vaadin-icons": "vaadin/vaadin-icons#4.1.3",
-    "vaadin-item": "vaadin/vaadin-item#2.0.0-alpha5",
-    "vaadin-list-box": "vaadin/vaadin-list-box#1.0.0-alpha9",
-    "vaadin-lumo-styles": "vaadin/vaadin-lumo-styles#1.0.0-alpha3",
-    "vaadin-notification": "vaadin/vaadin-notification#1.0.0-alpha7",
-    "vaadin-ordered-layout": "vaadin/vaadin-ordered-layout#1.0.0-alpha8",
-    "vaadin-progress-bar": "vaadin/vaadin-progress-bar#1.0.0-alpha12",
-    "vaadin-radio-button": "vaadin/vaadin-radio-button#1.0.0-alpha12",
-    "vaadin-split-layout": "vaadin/vaadin-split-layout#4.0.0-alpha5",
-    "vaadin-tabs": "vaadin/vaadin-tabs#2.0.0-alpha7",
-    "vaadin-text-field": "vaadin/vaadin-text-field#2.0.0-alpha10",
-    "vaadin-upload": "vaadin/vaadin-upload#4.0.0-alpha5"
+    "vaadin-item": "vaadin/vaadin-item#2.0.0-beta1",
+    "vaadin-list-box": "vaadin/vaadin-list-box#1.0.0-beta1",
+    "vaadin-lumo-styles": "vaadin/vaadin-lumo-styles#1.0.0-beta1",
+    "vaadin-notification": "vaadin/vaadin-notification#1.0.0-beta1",
+    "vaadin-ordered-layout": "vaadin/vaadin-ordered-layout#1.0.0-beta1",
+    "vaadin-progress-bar": "vaadin/vaadin-progress-bar#1.0.0-beta1",
+    "vaadin-radio-button": "vaadin/vaadin-radio-button#1.0.0-beta1",
+    "vaadin-split-layout": "vaadin/vaadin-split-layout#4.0.0-beta1",
+    "vaadin-tabs": "vaadin/vaadin-tabs#2.0.0-beta1",
+    "vaadin-text-field": "vaadin/vaadin-text-field#2.0.0-beta1",
+    "vaadin-upload": "vaadin/vaadin-upload#4.0.0-beta1"
   }
 }

vaadin-core.html

@@ -22,6 +22,7 @@
 <link rel="import" href="../vaadin-ordered-layout/vaadin-vertical-layout.html">
 <link rel="import" href="../vaadin-progress-bar/vaadin-progress-bar.html">
 <link rel="import" href="../vaadin-radio-button/vaadin-radio-button.html">
+<link rel="import" href="../vaadin-radio-button/vaadin-radio-group.html">
 <link rel="import" href="../vaadin-split-layout/vaadin-split-layout.html">
 <link rel="import" href="../vaadin-tabs/vaadin-tabs.html">
 <link rel="import" href="../vaadin-tabs/vaadin-tab.html">