updated .gitignore to ignore .jar files
various ui chnages

added color to text mode via Colors class (basically a struct)
when user enters 'exit' the program closes
when user enters 'help' fake instructions are displayed. real instructions still need to be implemented.
refactored CLI portion of Human.inputMove (portion wrapped in the most outward else statement) to try Move creation and catch various exceptions instead of testing for various mistakes in input.
Merge branch 'master' of https://github.com/corbinmc96/checkers_bot