Add output to stats?

[pherrymason]

I ignore if this is possible, but could be useful to add a report to stats generated by webpack instead of outputting the result of the inspection.

I'm using webpack from another application and I expect the output to be a JSON (using --json option).
If not possible, consider outputting your result to a specified file instead like this other plugin is doing BundleAnalyzer

[darrenscerri]

In 1.1.0, console.log and console.warn is no longer used and warnings are passed as compilation warnings and can be found in the stats.json, so this issue can be closed.