closes #13

android/build.gradle

@@ -11,6 +11,15 @@ android {
         versionCode 201
         versionName "2.0.1"
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    lintOptions {
+        abortOnError false
+    }
 }
 
 dependencies {

build.gradle

@@ -22,3 +22,7 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+subprojects {
+    tasks.withType(Javadoc).all { enabled = false }
+}

demo-android/build.gradle

@@ -16,6 +16,15 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    lintOptions {
+        abortOnError false
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
 }
 
 dependencies {