process.version is undefined bug fix

[WilliamBerlin76]

process.version is currently undefined which is breaking an app that I'm working on for myself and other windows users on my team.

Switching if from process.version to global.process.version fixes it.

[jopicornell]

I'm facing this issue when running browser tests. The problem is that webpack injects the variables, when compiling, so global and process are different. global is the node and process is the browser process.

[BogdanW3]

@calvinmetcalf Sorry for the completely random ping, but I stumbled upon all this today and you seemed like you were the last active reviewer on this code.
Per pull request #92, process.version was changed to global.process.version in the checks, but the actual access here wasn't changed. This pull requests seems to be the earliest of the multiple requests that would fix this problem.
(Other pull requests are #101, #104, and #116) (Also mentioned in issues #102 and #103)
I have found this one-line change to fully fix my current problems, so it'd be great to have it on npm!