more explanation in README

[jab]

Just came across this project and wondering how it relates to Fastly's official one (e.g. is this one more feature complete? is it Python 3 compatible?) and thought it might deserve a line or two in the README.

Also, it looks like this project is almost exactly the same as https://github.com/obulpathi/cdn-fastly-python (which is the repo linked to from https://pypi.python.org/pypi/cdn-fastly) but there's nothing on either of them indicating what the relationship is between them either. Is one a fork of the other? Is one no longer maintained?

Thanks.

[davidbirdsong]

We've been using this repo continuously since we wrote and released it without needing to modify it. At a quick glance, it's not obvious whether the Fastly library has reached parity w/ this one. Their repo lacks any meaningful commits since late 2014.

cdn-fastly-python appears to be some sort of manual fork of this repo based on comparing the contributors page, but AFAICT, the only difference is a single commit that modifies a print statement.

As for the outstanding PR's: guilty. We'll take a look and see which ones make sense to merge soon.

@davidbirdsong @paulstraw Thanks!