Python-pydebug

Added
- Updated `README.md` with `LineProfiler` install instructions.
Fixed
- Fixed issue 3 where errno is not imported.

Fixed
- Import missing `sys` library in the `profiler` decorator.

Fixed
- Import missing `warnigns` library.
- Fixed Django's settings variable retrieval.

Fixed
- Add list of requirements to `setup.py`.
- Improved coding style with `black`.

Added
- New `README.md` on how to use this library.
- All classes now have a self-explained docstring.

Changed
- Allow user to pass a custom `logging` class to the `ObjectInfo` decorator.