Dynamic webpack entry points

[BrentHoskins84]

I know this is an older project of yours, but I watched your live stream video on youtube and it was helpful. I then began building my own plugin and added the dynamic entry points and noticed that no one had created a pull request to add it to your template. So I thought that I would add it as a thank you for the great video.

I modified the webpack.config.mustache file to add the dynamic entry points and then added to the readme to include the installation of glob.

thanks Brent