added playing of cards for attack or healing
added overload rule handling
code formatted
non-starting player gets extra card

introduced mockable StartingPlayerChooser
non-starting player gets extra card
rule for non-starting player drawing extra card
Merge branch 'develop' of https://github.com/bkimminich/kata-tcg into develop
extra card rule explanation and image
Merge pull request #10 from bkimminich/develop

New Preparation rule: Non-starting player gets extra card