Switch to a license plugin for headers

build.gradle

@@ -1,17 +1,3 @@
-println """
-*******************************************
- You are building WorldEdit!
-
- If you encounter trouble:
- 1) Read COMPILING.md if you haven't yet
- 2) Try running 'build' in a separate Gradle run
- 3) Use gradlew and not gradle
- 4) If you still need help, ask on IRC! irc.esper.net #sk89q
-
- Output files will be in [subproject]/build/libs
-*******************************************
-"""
-
 buildscript {
     repositories {
         mavenCentral()
@@ -33,6 +19,24 @@ buildscript {
     }
 }
 
+plugins {
+    id 'net.minecrell.licenser' version '0.4.1' apply false
+}
+
+println """
+*******************************************
+ You are building WorldEdit!
+
+ If you encounter trouble:
+ 1) Read COMPILING.md if you haven't yet
+ 2) Try running 'build' in a separate Gradle run
+ 3) Use gradlew and not gradle
+ 4) If you still need help, ask on IRC! irc.esper.net #sk89q
+
+ Output files will be in [subproject]/build/libs
+*******************************************
+"""
+
 allprojects {
     group = 'com.sk89q.worldedit'
     version = '7.0.0-SNAPSHOT'
@@ -84,6 +88,7 @@ subprojects {
     apply plugin: 'checkstyle'
     apply plugin: 'com.github.johnrengelman.shadow'
     apply plugin: 'com.jfrog.artifactory'
+    apply plugin: 'net.minecrell.licenser'
 
     ext.internalVersion = version + ";" + gitCommitHash
 
@@ -148,4 +153,9 @@ subprojects {
     artifactoryPublish {
         publishConfigs('archives')
     }
+
+    license {
+        header = rootProject.file("HEADER.txt")
+        include '**/*.java'
+    }
 }