set test for two rolls
add a score var
merge player-roll-twice
check if 2 rolls can score more than 10
complete method

answer the test two-rolls-bounded.
method roll set the score the 10 maximum.
Merge branch 'feature/two-rolls-are-bounded-too' of github.com:akh2020/tdd-bowling into feature/two-rolls-are-bounded-too

Conflicts:
	tests/unit/Team2020/BowlingGameTest.php