Modify installation and exposing of .mplstyles

[echedey-ls]

Major changes

• Change distribution scheme similar to https://github.com/dhaitz/mplcyberpunk
  • Clear copying styles to .matplolib/styles
  • Move style files
  • Delete post-install directives
  • Update descriptions

Minor changes

• Update .gitignore
• Bump version to 1.1.0

Requires updating Wiki and other docs.

Closes #68 Should close #61 too

I'd like as much input as possible. I've been working on it for some time now and done some broad testing, but before breaking anything I'd like someone else to install from my repo and look for any flaws.

Hope this helps.