Add crate lib

lib.rs

@@ -7,6 +7,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#[link(name = "opengles",
+        vers = "0.1")];
+#[crate_type = "lib"];
+
 extern mod std;
 
 pub mod gl2;