Fork this repo and refactor my code!
Please do it in small commits, ideally explaining on each step what and why are You doing.
dziemid#1 String Calculator
Problem description: http://osherove.com/tdd-kata-1/
Code to be refactored: https://github.com/dziemid/refactormycode/tree/master/java/string_calculator
Example of refactorings: https://github.com/dziemid/refactormycode/commits/java_string_calculator_refactoring
Example of specific small commit: dziemid@355aad8