Update base sample template to use Material themes

Change-Id: I15bce7243c3f4271a36f47bdfe508e2abe80973c
diff --git a/templates/base/_MODULE_/src/template/res/values-v21/template-styles.xml b/templates/base/_MODULE_/src/template/res/values-v21/template-styles.xml
new file mode 100644
index 0000000..134fcd9
--- /dev/null
+++ b/templates/base/_MODULE_/src/template/res/values-v21/template-styles.xml
@@ -0,0 +1,22 @@
+<!--
+  Copyright 2014 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+    <style name="Theme.Base" parent="android:Theme.Material.Light" />
+
+</resources>