Reorganize README with a quickstart of common usage

[Keno]

This package has gotten quite complex (which is awesome!), but I'm afraid that users who just want to change the color of a plot or something might be scared off by the README. Having a simple quickstart section with common usage ala color("red"), colormap("whatever") would be a good idea.

[StefanKarpinski]

This has turned into one of my favorite packages because of the intense use of immutables and multiple dispatch. I know very little about color spaces and such, but it seems to me that this may be one of the more extensive and complete color manipulation libraries around at this point.

[glennsweeney]

I don't know of any better libraries in existence, and yet it is still growing rapidly.

I'm not sure I'm the right man to work with the documentation, as I'm pretty new here. However, I'm happy to offer input where needed.

[rennis250]

My line of research is colour perception and I agree with @StefanKarpinski and @glenn-sweeney that this is one of the most comprehensive and impressive colour packages I have seen for a programming language. Being that colour is what I think about every day, I feel rather guilty that I have not had a chance to assist with this package and would be overjoyed the lend a hand with the documentation. I will start to draft something this weekend.

Best,
Rob

[rennis250]

And, @glenn-sweeney, looking at your resume, I would certainly say that you should get your hands dirty in this package, too. ;)

Best,
Rob

[glennsweeney]

Rob,

Thanks for the input. ;) I'm still a "lowly" student, but I've done what I can to add a little bit of functionality here and there. I'm going to be away from my computer for much of the summer, but next fall I'm going to be continuing studies, and with that comes more work in Color.

If you get a draft of documentation going by all means share it, and I can provide input where it is appropriate for me to do so.

-Glenn