Add source of multiline java code

Author: Matt Hayes

plugin/java/org/adrianwalker/multilinestring/EcjMultilineProcessor.java

@@ -1,3 +1,6 @@
+// Code from https://github.com/benelog/multiline.git
+// Based on Adrian Walker's blog post: http://www.adrianwalker.org/2011/12/java-multiline-string.html
+
 package org.adrianwalker.multilinestring;
 
 import java.util.Set;

plugin/java/org/adrianwalker/multilinestring/JavacMultilineProcessor.java

@@ -1,3 +1,6 @@
+// Code from https://github.com/benelog/multiline.git
+// Based on Adrian Walker's blog post: http://www.adrianwalker.org/2011/12/java-multiline-string.html
+
 package org.adrianwalker.multilinestring;
 
 import java.util.Set;

plugin/java/org/adrianwalker/multilinestring/Multiline.java

@@ -1,3 +1,6 @@
+// Code from https://github.com/benelog/multiline.git
+// Based on Adrian Walker's blog post: http://www.adrianwalker.org/2011/12/java-multiline-string.html
+
 package org.adrianwalker.multilinestring;
 
 import java.lang.annotation.ElementType;

plugin/java/org/adrianwalker/multilinestring/MultilineProcessor.java

@@ -1,3 +1,6 @@
+// Code from https://github.com/benelog/multiline.git
+// Based on Adrian Walker's blog post: http://www.adrianwalker.org/2011/12/java-multiline-string.html
+
 package org.adrianwalker.multilinestring;
 
 import java.util.Set;