chore(sonatype): prepare the powerapi-core project for publication

Write the needed configuration for publishing the powerapi-core artifact.

Author: mcolmant

powerapi-core/build.sbt

@@ -1,5 +1,11 @@
+import SonatypeKeys._
+
+sonatypeSettings
+
 name := "powerapi-core"
 
+organization := "org.powerapi"
+
 // App
 libraryDependencies ++= Seq(
   "com.typesafe.akka" %% "akka-actor" % "2.3.6",
@@ -18,6 +24,47 @@ libraryDependencies ++= Seq(
   "org.scalatest" %% "scalatest" % "2.2.2" % "test"
 )
 
+startYear := Some(2014)
+
+licenses := Seq("AGPL-3.0" -> url("http://www.gnu.org/licenses/agpl-3.0.txt"))
+
+pomExtra := {
+  <url>http://www.powerapi.org/</url>
+  <scm>
+    <url>github.com/Spirals-Team/powerapi</url>
+    <connection>scm:git:git@github.com:Spirals-Team/powerapi.git</connection>
+    <developerConnection>scm:git:git@github.com:Spirals-Team/powerapi.git</developerConnection>
+  </scm>
+  <developers>
+    <developer>
+      <id>mcolmant</id>
+      <name>Maxime Colmant</name>
+      <url>http://researchers.lille.inria.fr/colmant/</url>
+    </developer>
+    <developer>
+      <id>rouvoy</id>
+      <name>Romain Rouvoy</name>
+      <url>http://www.lifl.fr/~rouvoy/</url>
+    </developer>
+    <developer>
+      <id>lhuertas</id>
+      <name>Loïc Huertas</name>
+    </developer>
+  </developers>
+}
+
+publishMavenStyle := true
+
+publishArtifact in Test := false
+
+publishTo := {
+  val nexus = "https://oss.sonatype.org/"
+  if (isSnapshot.value)
+    Some("snapshots" at nexus + "content/repositories/snapshots")
+  else
+    Some("releases"  at nexus + "service/local/staging/deploy/maven2")
+}
+
 val downloadBluecoveLibs = TaskKey[Seq[File]]("download-bluecove")
 
 downloadBluecoveLibs := {

powerapi-sampling/src/test/scala/org/powerapi/sampling/SamplingConfigurationSuite.scala

@@ -26,7 +26,6 @@ import akka.actor.ActorSystem
 import akka.testkit.TestKit
 import akka.util.Timeout
 import org.powerapi.UnitTest
-import scala.collection.BitSet
 import scala.concurrent.duration.DurationInt
 
 class SamplingConfigurationSuite(system: ActorSystem) extends UnitTest(system) {

project/gpg.sbt

@@ -0,0 +1 @@
+addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")

project/sonatype.sbt

@@ -0,0 +1 @@
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "0.2.2")