bingimg.sh revamp

create README.md; remove archive dir; simplify and add flags to
bingimg.sh; create classic_bingimg.sh (function more like original
script)
Merge pull request #1 from ed-flanagan/master

It is wonderful outside, we are in the middle of the Steam Summer sale, and you are spending your time rewriting a bunch of code that I wrote as a one-off project 9 months ago that no one (including me) even uses?

ಠ_ಠ

Get it together Ed.