This line causes below warning. I will fix it on merging the PR.
```
Creating properties on demand (a.k.a. dynamic properties) has been deprecated and is scheduled to be removed in Gradle 2.0. Please read http://gradle.org/docs/current/dsl/org.gradle.api.plugins.ExtraPropertiesExtension.html for information on the replacement for dynamic properties.
Deprecated dynamic property: "runtimeLibs" on "task ':archiveDependencies'", value: "configuration ':runtime'".
```