Add support for installing into the Jenkisn repo

.gitignore

@@ -3,3 +3,4 @@ build/
 *.sw*
 .idea/
 *.iml
+/bin/

build.gradle

@@ -13,7 +13,11 @@ apply plugin: 'groovy'
 apply plugin: 'maven'
 apply plugin: 'com.jfrog.bintray'
 
-version = '0.3.0'
+if (System.env['Jenkins.Repository']) {
+    apply from: 'gradle/integration.gradle'
+}
+
+version = '0.3.1'
 group = 'com.github.jruby-gradle'
 description = 'A library for managing Ruby gems'
 defaultTasks 'check', 'assemble'

gradle/integration.gradle

@@ -0,0 +1,19 @@
+/*
+ * Handle installing our artifacts into the Jenkins local repository for integration testing
+ * <https://wiki.jenkins-ci.org/display/JENKINS/Jenkins+Maven+Repository+Server>
+ */
+
+repositories {
+    maven {
+        url System.env['Jenkins.Repository']
+    }
+}
+
+uploadArchives {
+    repositories {
+        mavenDeployer {
+            repository(url: System.env['Jenkins.Repository'])
+        }
+    }
+}
+