Enemy Scores

Enemies Now How methods that return their score depending on thier
State!
Increment Score upon Kill
Merge branch 'pr/17' into develop
Revert "Merge branch 'pr/17' into develop"

This reverts commit 874fcd81948edf1eaf236bd563a6e4e7df59d221, reversing
changes made to f52baf1e81e3b0b70fb24794e48cc9e5aaf1c057.
Merge branch 'develop' of https://github.com/cdglasz/Galaga into develop