Fix fromResponse bug

Logger#info 方法只有一个参数！

错误如下：
```ruby
ArgumentError: wrong number of arguments (2 for 0..1)
	from /Users/tumayun/.rvm/rubies/ruby-2.1.3/lib/ruby/2.1.0/logger.rb:433:in `info'
	from /Users/tumayun/.rvm/gems/ruby-2.1.3@catchchat_server/gems/jpush-3.1.1/lib/jpush/model/push_result.rb:13:in `fromResponse'
	from /Users/tumayun/.rvm/gems/ruby-2.1.3@catchchat_server/gems/jpush-3.1.1/lib/jpush/push_client.rb:26:in `sendPush'
	from /Users/tumayun/.rvm/gems/ruby-2.1.3@catchchat_server/gems/jpush-3.1.1/lib/jpush/jpush_client.rb:43:in `sendPush'
```