Add licenses and remove third party libraries

Makefile

@@ -1,3 +1,9 @@
+# Copyright (c) 2014, Facebook, Inc.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree. An additional grant
+# of patent rights can be found in the PATENTS file in the same directory.
 
 FILES=src/__tests__/Layout-test.c src/Layout.c src/Layout-test-utils.c
 
@@ -10,6 +16,7 @@ c_test: c
 	@rm a.out
 
 java: transpile_all src/java
+	@if [ ! -f lib/junit4.jar ]; then mkdir lib/; wget -O lib/junit4.jar http://search.maven.org/remotecontent?filepath=junit/junit/4.10/junit-4.10.jar; fi
 	@javac -cp ./lib/junit4.jar -sourcepath ./src/java/src:./src/java/tests src/java/tests/com/facebook/csslayout/*.java
 
 java_test: java
@@ -17,7 +24,7 @@ java_test: java
       com.facebook.csslayout.LayoutEngineTest \
       com.facebook.csslayout.LayoutCachingTest \
       com.facebook.csslayout.CSSNodeTest
-  
+
 transpile_all: ./src/transpile.js
 	@node ./src/transpile.js