F.wait() parameter handling issue

Hi Alex,
I was looking at:

waits.js (line 274)

```
wait: function( checker, timeout, success, message ) {
if(typeof checker === "number"){
timeout = checker;
FuncUnit.wait(timeout, success)
return this;
} else {
return this.size(checker, timeout, success, message)
}
},
```

If F().wait() was called in the context of a timer wait, as implied by `typeof checker === "number"` then the call signature is expected to be: `F('selector').wait(1234, successFn)`

According to my example, the mapping is as follows:

checker -> 1234
timeout -> successFn
success -> undefined
message -> undefined

So the expected internal call is: `FuncUnit.wait(checker, timeout)`
But in your logic you are using the variable `success` for the success handler instead of timeout which holds the success handler.

This is the suggested fix:

```
wait: function( checker, timeout, success, message ) {
if(typeof checker === "number") {
success = timeout;
timeout = checker;
FuncUnit.wait(timeout, success);
return this;
} else {
return this.size(checker, timeout, success, message)
}
},
```

Start at waits.js line 274 and trace the numeric-checker path for F('selector').wait(1234, successFn), comparing its argument mapping with FuncUnit.wait. The issue is done when the success handler is passed correctly for timer waits while the selector-based path remains unchanged.

Written by the indexing model from the issue text.