Fix build

android/java/app/build.gradle

@@ -17,6 +17,13 @@ android {
         targetCompatibility JavaVersion.VERSION_1_7
     }
 
+    packagingOptions {
+        exclude 'META-INF/LICENSE.txt'
+        exclude 'META-INF/NOTICE.txt'
+    }
+
+
+
     buildTypes {
         release {
             runProguard false

android/java/lib/build.gradle

@@ -29,6 +29,10 @@ android {
     }
 }
 
+configurations {
+    all*.exclude group: 'commons-logging', module: 'commons-logging'
+}
+
 dependencies {
     compile 'commons-validator:commons-validator:1.4.0'
     compile 'com.android.support:support-annotations:21.0.0'