Add guava + auto value to util.

build.gradle

@@ -28,6 +28,8 @@ repositories.mavenCentral()
 
 dependencies {
     compile group: 'com.google.code.findbugs', name: 'jsr305', version: '3.0.0'
+    compile group: 'com.google.auto.value', name: 'auto-value', version: '1.0'
+    compile group: 'com.google.guava', name:'guava', version: '18.0'
 
     testCompile group: 'junit', name: 'junit', version: '4.12'
     testCompile group: 'org.mockito', name: 'mockito-core', version: '1.10.17'