useErrorHandlerMiddleware doesn't act like other functions.

[ben-ryder]

Package Information: error-handler@0.1.0

Describe the bug
Various other use... function in KangoJS all work by passing in the express app like useX(app, config) but useErrorHandlerMiddlewaredoesn't. It should work the same way to keep things consistent.

To Reproduce
Attempt to use useErrorHandlerMiddleware and you will see it must be used like app.use(useErrorHandlerMiddleware(config)); rather than useErrorHandlerMiddleware(app, config).

Expected behaviour
Error handling middleware should be setup with useErrorHandlerMiddleware(app, config)

System Information
n/a

Additional context
n/a

[ben-ryder]

This is actually worse than I first thought. You must actually put:

    app.use(useErrorHandlerMiddleware({
        errorHandlerConfig: {}
    }));

I managed to put app.use(useErrorHandlerMiddleware); which causes the middleware not to work and sensitive error messages are exposed in responses!

[ben-ryder]

Should be all sorted as of error-handler v0.2.4