'com.typesafe.akka:akka:2.2.0-RC1'
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka</artifactId>
<version>2.2.0-RC1</version>
</dependency>
<dependency org="com.typesafe.akka" name="akka" rev="2.2.0-RC1"/>
"com.typesafe.akka", "akka", "2.2.0-RC1"