Can't npm install from git due to no version number in package.json

I'm running npm install philipwalton/solved-by-flexbox --save but it won't add it to package.json because the package.json for this repo doesn't have a version number.

Any chance of getting a version number added so this repo can be installed direct from github?

I'm not sure I really want people npm installing it. The demo files in this repo are supposed to be just that -- demos. This isn't a library and hasn't been widely cross-browser tested or anything like that to make it production ready...