Edited Issue: General exception message when trying to remote attach [708]

Publish to azure web site, try to remote debug attach using Node.js remote debugging transport.

Not sure what I'm doing wrong, it would be nice if the error message had more info.

This appears when I click Refresh.

```
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Microsoft Visual Studio
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Unable to connect to 'ws://hvdebug4.azurewebsites.net/ntvs-debug-proxy/f6c1592d-0e7a-4066-92da-6c6c64a5b75c'. General Exception
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OK
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```