Missing build files

[gmurphy44]

I'm investigating some of the multitouch pointer libraries and this one looks promising, but it's a bit of a hassle to test with -- I need to clone the repo and build with grunt first.

Providing the build files that grunt generates (.min, .dev) would make it easier for people to do some quick tests without having to clone, install node, install grunt + extras, build.

Cheers.

[dfreedm]

The builds are in bower as pointerevents-polyfill. I'll add this to the README, thanks!