don't use compatibility libraries from Android L

google's hardcoded internal values conflict with minsdkversion=11, see
https://code.google.com/p/android/issues/detail?id=72430

fixes #24

remote-reader/app/build.gradle

@@ -19,6 +19,6 @@ android {
 }
 
 dependencies {
-    compile 'com.android.support:appcompat-v7:+'
+    compile 'com.android.support:appcompat-v7:19.+'
     compile fileTree(dir: 'libs', include: ['*.jar'])
 }