Set some default groups and descriptions on our packaging/run tasks

Fixes #19

src/main/groovy/com/github/jrubygradle/storm/JRubyStorm.groovy

@@ -74,10 +74,11 @@ class JRubyStorm extends DefaultTask {
     JRubyStorm() {
         super()
         configuration = project.configurations.maybeCreate(DEFAULT_CONFIGURATION_NAME)
-        this.group JRubyPlugin.TASK_GROUP_NAME
-        this.runTask = JRubyStormInternal.createRunTask(this.project, this)
-        this.assembleTask = JRubyStormInternal.createAssembleTask(this.project, this)
-        this.dependsOn assembleTask
+        runTask = JRubyStormInternal.createRunTask(this.project, this)
+        assembleTask = JRubyStormInternal.createAssembleTask(this.project, this)
+
+        dependsOn assembleTask
+        group JRubyPlugin.TASK_GROUP_NAME
 
         project.afterEvaluate { this.updateDependencies() }
     }

src/main/groovy/com/github/jrubygradle/storm/JRubyStormLocal.groovy

@@ -44,6 +44,7 @@ class JRubyStormLocal extends JavaExec implements JRubyExecTraits {
     JRubyStormLocal() {
         super()
         super.setMain 'redstorm.TopologyLauncher'
+        description 'Execute the topology in "local" mode'
     }
 
     @Override

src/main/groovy/com/github/jrubygradle/storm/internal/JRubyStormJar.groovy

@@ -41,6 +41,7 @@ class JRubyStormJar extends JRubyJar {
     JRubyStormJar() {
         super()
         appendix = ''
+        description 'Package a Storm topology jar'
 
         project.afterEvaluate {
             this.includeRedstorm()

src/test/groovy/com/github/jrubygradle/storm/JRubyStormSpec.groovy

@@ -142,6 +142,15 @@ class JRubyStormSpec extends Specification {
         then:
         project.configurations.findByName(JRubyStorm.DEFAULT_CONFIGURATION_NAME)
     }
+
+    @Issue('https://github.com/jruby-gradle/jruby-gradle-storm-plugin/issues/19')
+    def "group should be set by default on the sub-tasks"() {
+        given:
+        JRubyStorm task = project.task('spock', type: JRubyStorm)
+
+        expect:
+        task.assembleTask.group == task.group
+    }
 }
 
 @Ignore("For some reason these are running with DEBUG log level and it won't turn off")