Intellij IDEAでKotlin+Gradleを使う

https://stackoverflow.com/questions/14733566/how-to-run-kotlin-class-from-the-command-line/34513057#34513057

version '1.0-SNAPSHOT'

buildscript {
    ext.kotlin_version = '1.1.2'

    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

apply plugin: 'kotlin'
apply plugin: 'application' //ここを追加

mainClassName = "Hello" //ここを追加

repositories {
    mavenCentral()
}

dependencies {
    compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"
}

Hello.kt

class Hello {
    companion object {
        @JvmStatic public fun main(args: Array<String>) {
            println("hello world")
        }
    }
}