allowing import and export, fixing issue with Webpack

[0cv]

This is a fix for #227 and might help partially that: #237

[0cv]

I'm using it in our development since my pull request, and it works as long as you're mindful, but it's clearly a bit fragile and there are cases which not work. Among others:

• export default angular.module(...).config(function("$willNotGetAnnotated"){}) will fail being annotated. But moving the function outside solves the issue.
• there is no "automatic" annotation, so that when using a function/class in a standalone module (file), it will obviously be ignored by the current logic. A manual @ngInject is necessary.
• "ngInject", depending on the situation, does not work. /@ngInject/ will, as far as I have seen so far, always work.

[vperron]

Albeit being fragile, at least we'll be able to get minimal import/export support in ng-annotate. I guess improving it to make it 100% functional will follow. Every little effort helps. Right now I don't have time to do this, but with that merged at least I won't change my toolchain :)

[olov]

#245

[olov]

#245