I have problem with importing this library into eclipse. Things I did:
There is a simplest and quick way to import a Gradle project into Eclipse. Just download the Gradle plugin for Eclipse from here.
https://marketplace.eclipse.org/content/gradle-integration-eclipse-0
And then from import select Gradle and your project would be imported. Then you have to click on Build Model to run it.
EDIT Above link for Gradle plugin is no more valid. You can use the following link.
https://marketplace.eclipse.org/content/buildship-gradle-integration