Merge pull request #370 from dreamteam69/master

Update pom.xml
sound
Merge pull request #371 from katiewood/master

sound
edit ship 1
Merge pull request #372 from katiewood/master

edit ship 1
edit ship 3
Merge pull request #373 from katiewood/master

edit ship 3
edit ship 3
Merge pull request #374 from katiewood/master

edit ship 2
change position of weapon for ship 2
Merge pull request #375 from katiewood/master

change position of weapon for ship 2
change position of weapon for ship 3
Merge pull request #376 from katiewood/master

change position of weapon for ship 3
update read me as a test
Merge pull request #377 from gurnam17/master

update read me as a test
Stop sound on game over/ stop sound method
Merge pull request #378 from ping19/master

Stop sound on game over/ stop sound method
Pause sound of game pause
Merge pull request #379 from ping19/master

Pause sound of game pause
Refactor sound on useWeapon()