Allow waitsFor() arguments to be specified in arbitrary order.

Default waitsFor() timeout is now specified in env.defaultTimeoutInterval; defaults to 5 seconds.
Deprecate waits() block in favor of waitsFor().

src/WaitsForBlock.js

@@ -10,7 +10,7 @@
  * @param {jasmine.Spec} spec The Jasmine spec.
  */
 jasmine.WaitsForBlock = function(env, timeout, latchFunction, message, spec) {
-  this.timeout = timeout;
+  this.timeout = timeout || env.defaultTimeoutInterval;
   this.latchFunction = latchFunction;
   this.message = message;
   this.totalTimeSpentWaitingForLatch = 0;