Adding HTTP status 500 (internal service error) handling

[skolorz]

In case of SoapFault (HTTP status 500) InternalErrorException is thrown.

[tombujok]

Awesome! I did not have time to work on soap-ws for a while. But I will schedule a session to merge all the pull requests. Thanks!

[skolorz]

In fact it did not work in Travis, I'm new to git and GitHub and did something wrong. I'll fix it.

[sumeetchhetriwellogic]

Hi Tom,

First of all thanks for the library!!

Even i encountered the same issue, it would be great if we could have this functionality within soap-ws.
👍 from my side.

Thanks,
Sumeet Chhetri