Add Java 6 to Travis

.travis.yml

@@ -2,6 +2,7 @@ language: java
 jdk:
   - oraclejdk8
   - oraclejdk7
+  - openjdk6
 script: mvn clean install -U
 before_install: cd ProtocolLib
 install: true

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/nbt/io/NbtBinarySerializer.java

@@ -158,6 +158,7 @@ public class NbtBinarySerializer {
 	
 	/**
 	 * Load an NBT list from a stream.
+	 * @param <T> Type
 	 * @param source - the input stream.
 	 * @return An NBT list.
 	 */