feat(expect.js): bump v0.3.1 adding withArgs

expect.js/expect.js.d.ts

@@ -1,5 +1,5 @@
-// Type definitions for expect.js 0.2.0
-// Project: https://github.com/LearnBoost/expect.js
+// Type definitions for expect.js 0.3.1
+// Project: https://github.com/Automattic/expect.js
 // Definitions by: Teppei Sato <https://github.com/teppeis>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
@@ -12,6 +12,11 @@ declare module Expect {
          */
         ok(): void;
 
+        /**
+         * Creates an anonymous function which calls fn with arguments.
+         */
+        withArgs(...args: any[]): Root;
+
         /**
          * Assert that the function throws.
          *