Results 2 issues of Alex Qin

https://github.com/ded/reqwest/blob/master/reqwest.js#L414 throws in IE because `catch` is a reserved word http://msdn.microsoft.com/en-us/library/ie/0779sbks(v=vs.94).aspx ``` , catch: function (fn) { return this.fail(fn) } ``` https://github.com/ded/reqwest/blob/master/reqwest.js#L297 throws in IE8 when `resp` is `undefined` ```...