Add missing license text to dygraph-externs.js and dygraph-types.js
+/**
+ * @license
+ * Copyright 2006 Dan Vanderkam (danvdk@gmail.com)
+ * MIT-licensed (http://opensource.org/licenses/MIT)
+ */
+
// TODO(danvk): move the Dygraph definitions out of here once I closure-ify dygraphs.js
/**
* @param {!HTMLDivElement|string} div
+/**
+ * @license
+ * Copyright 2006 Dan Vanderkam (danvdk@gmail.com)
+ * MIT-licensed (http://opensource.org/licenses/MIT)
+ */
+
// This file contains typedefs and externs that are needed by the Closure Compiler.
/**