Flask-sock

- Move generic WebSocket code to [simple-websocket](https://github.com/miguelgrinberg/simple-websocket) package ([commit](https://github.com/miguelgrinberg/flask-sock/commit/b3d5ecb31495430d6eda7b88830c8f4cca51e192))

- Updated readme ([commit](https://github.com/miguelgrinberg/flask-sock/commit/4ffdcecfb8949327db6cdeb7a25fad1ca11507ec))
- Add support for eventlet and gevent ([commit](https://github.com/miguelgrinberg/flask-sock/commit/ac6d3077ca4f37af3b63dd1d0ab263031ae9bc49))

- Handle path arguments correctly ([commit](https://github.com/miguelgrinberg/flask-sock/commit/a9a216b7892a2fd5c23118a548d647a4820bf23e))
- Added minimal usage documentation to readme file ([commit](https://github.com/miguelgrinberg/flask-sock/commit/7f8c8fd53f43dae427263b98a3268d42603187b9))

- Close method ([commit](https://github.com/miguelgrinberg/flask-sock/commit/8c0895c351a4e6b9379f784f48c0e02394d5d030))

- Better code organization ([commit](https://github.com/miguelgrinberg/flask-sock/commit/8a89e2999d05fa1274dcf6583fb07c0f9bf2ac47))

- Remove dependency on Flask request from WebSocket class ([commit](https://github.com/miguelgrinberg/flask-sock/commit/1f856ad35ad1f330d22cf5af62c10ded21a86e75))
- Add ConnectionClosed exception ([commit](https://github.com/miguelgrinberg/flask-sock/commit/e1bcadf85ff5e142604fef18cbf6d83e5d935db1))
- Added HTML template to echo example ([commit](https://github.com/miguelgrinberg/flask-sock/commit/65ef8373e7ec0aa1019c0d1764d0d64e24c78a3a))