Added 15-shadowmaps-simple and 16-shadowmaps.

examples/16-shadowmaps/vs_shadowmaps_texture.sc

@@ -0,0 +1,16 @@
+$input a_position, a_texcoord0
+$output v_texcoord0
+
+/*
+ * Copyright 2013 Dario Manesku. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include "../common/common.sh" 
+
+void main()
+{
+	gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
+
+    v_texcoord0 = a_texcoord0;
+}