stuff that doesn't do anything

I've added COPYRIGHT/LICENSE/AUTHORS files, and a rust library that, right now, just has some very basic 6502 enums and constants.

"cargo build" in the root folder will build the library in src/machine6502/lib.rs

"cargo build" in src/test_exe/ will build a hello-world project that also happens to depend on the machine6502 library (I created this just to make sure I was exporting things correctly)

I'm making this pull request from my master branch into yours since I wanted to see what would happen

I've put the BSD license everywhere according to the DRY (do repeat yourself) principle