added some documentation to the README
ignore *.iml in subdirs too
removed deprecated class PlayCardMessage
Modified tests to work better multithreaded
Command handler now catches exceptions to not break the console input
Removed phases variable in Server TCGGame
add empty set type param to get rid of warning
`CardshifterConstants` for "VANILLA" string that appears everywhere
Added `users` command and `play` command (to force a user to play any)
Merged PR #56 janos/tiny-minor into client-server. Fixes #56
Removed ignoring of test methods
Merge branch 'client-server' into javafx