Missing main-section in package.json

[nicklasb]

Making no PR as this applies to the color- and fontpicker as well and is such an easy fix.

The problem is that there is no main entry point defined in the package.json, so for example for jspm, there has to be a package override do define it.

[piu130]

Same problem with webpack. Could you explain the override fix?

[nicklasb]

It is possible to override the default handling by adding a package override in the JSPM registry, which I have:
https://github.com/jspm/registry/tree/master/package-overrides/github/Textalk