Bug-96 travis.bat and wait_for_emulator.bat

@john-hu I have finished this one. But now, I still have to manual clean project again after I run it. Even I add `ant clean` to the batch file.
You assume that user may run this command at the folder of `ci`. That looks not good for a normal user. We should assume that all commands are run at the root folder of our repo. So, please use `ci\wait_for_emulator.bat` here and the followings.