Specify minimum SDK version of 11 in the manifest

The photoviewer project throws errors in eclipse because there's no
minimum sdk version in the AndroidManifest. This CL specifies min SDK
version of 11, which is sufficient for all of the calls we make in the
app and stops eclipse from complaining

Change-Id: Id5492651faa8fffc857d2660f7d4796428efb2d6
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 485e044..e4e9101 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -18,4 +18,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.ex.photo"
     android:versionCode="1">
+
+    <uses-sdk
+        android:minSdkVersion="11"/>
 </manifest>
\ No newline at end of file