Issue #3: Establish Continuous Integration

Updated readme with appropriate badges.
Started with basic interactions between players and the transition
between a players phases.
Refactoring. Moved entities from tests into their own modules.
Fixed import to enable `make test`.
Deleted unnecessary files.
fixed style issues from `make lint`
Updated docs. Generate with `make docs`.
Merge branch 'changes/basic-interaction' of https://github.com/Dystopist/ANRPython.git into changes/basic-interaction