Could not find method jcenter() for arguments [] on repository container

Just to summarize the discussion in comments:

Gradle added jcenter() shortcut in version 1.7. Any version prior to it will fail with this exception.
You can still work with jcenter by adding it as a normal maven repo:

repositories {
    maven {
        url "https://jcenter.bintray.com"
    }
    ....
}