Humanframework

Added
- Generate HTML reports (12)

Added
- Add "How it works" section in README (11)
- Add web testing features (13)

Added
- core.sleep

Added
- Testing a sample login page
- Load .env from main()
- web.assert_element_status
- Setup Human Framework endpoint from terminal (9)

Fixed
- Fix action lookup

Fixed
- .env not loaded when not using pipenv (7)

Added
- Include assert.not_equal
- Training data for adding using + sign

Changed
- Replace multiply with add