add plugin, won't build on JDK6

Author: aoberoi

build.gradle

@@ -36,7 +36,21 @@ dependencies {
     // TODO: find out how to initialize these dependencies properly, or remove them
     //compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.5'
     //compile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.5'
-} 
+}
+
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath 'nl.javadude.gradle.plugins:license-gradle-plugin:0.7.0'
+    }
+}
+apply plugin: 'license'
+license {
+    header rootProject.file('codequality/HEADER')
+    ext.year = Calendar.getInstance().get(Calendar.YEAR)
+}
 
 artifacts {
     archives javadocJar, sourcesJar

codequality/HEADER

@@ -0,0 +1,4 @@
+OpenTok Java SDK
+http://www.tokbox.com
+
+Licensed under The MIT License (MIT). See LICENSE file for more information.