Failed assertions no longer repeat message.

Failed assertions no longer repeat the assertion message as a comment. In my
Node.js `assert` module function wrappers, I was printing the assertion message
passed into the assertion function as the assertion message. To be thorough, I
printed the assertion message of the caught `AssertionError` as a comment.
However, the `AssertionError` message is, of course, the same as the message
passed into the assertion, the assertion message. It was redundant. It is no
more.

Updated `vendor/twinkie` to support upstream changes made for CoffeeScript
1.3.1.

src/lib/proof.coffee

@@ -196,7 +196,9 @@ for name, assertion of require("assert")
         assertion.apply @, splat
         process.stdout.write "ok #{++@_actual} #{message}\n"
       catch e
-        process.stdout.write "not ok #{++@_actual} #{message} # #{e.message}\n"
+        # Recall that the assertion message is the same as the assertion
+        # exception message.
+        process.stdout.write "not ok #{++@_actual} #{e.message}\n"
         EXPECTED = if name is "ok" then true else splat[1]
         inspect = { EXPECTED, GOT: splat[0] }
         inspect = require("util").inspect inspect, null, Math.MAX_VALUE