Refactoring & Validations

• Improve order validations
• Code refactoring

Co-author: @PhilippeGalvan

v0.0.3 - Market buy order available

• Market buy order is now available if you don't want to execute a Limit buy order
• Binance API connection errors are caught
• Code has been improved (data validation and objects)

v0.0.2 - New structure

• New code structure that will help future improvements
• Better errors handling (especially Binance API errors)
• Prices and quantities are validated in a better way to make sure they are compliant with the symbol requirements

v0.0.1 - First version of the script

Update README.md