Added necessary command for Coveralls in .travis.yml
Added necessary command for Coveralls in .travis.yml

tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong,Heliozoa/tdd-pingpong,tdd-pingis/tdd-pingpong,tdd-pingis/tdd-pingpong,Heliozoa/tdd-pingpong