have clean help delete the output directory

to make things nice and clean

build.gradle

@@ -13,6 +13,16 @@ group = 'com.intellectualcrafters'
 version = '3.3.3-SNAPSHOT'
 description = """PlotSquared"""
 
+//nukes the output dir
+task makePretty(type: Delete) {
+   delete 'target'
+}
+
+//makes clean nuke the output dir.
+clean{
+   dependsOn makePretty
+}
+
 subprojects {
     apply plugin: 'java'
     apply plugin: 'maven'