gistfile1.txt

build.gradle:

plugins {
    id 'idea'
}

subprojects{
    apply plugin: 'scala'

    repositories {
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
    }

    tasks.withType(ScalaCompile) {
        sourceCompatibility = "1.7"
        targetCompatibility = "1.7"
    }

    configurations {
        ... 
    }

    dependencies {
        testCompile group: 'junit', name: 'junit', version: '4.11'
        testCompile 'org.scalatest:scalatest_2.10:3.0.0-M7'
        compile "org.scala-lang:scala-library:2.10.6"
        compile "org.scala-lang:scala-compiler:2.10.6"
    }
}

settings.gradle: 
rootProject.name = 'projectname'
include 'module1', 'module2'