Improved Graphics

for firing weapons for player, boss 1 and 2, changed back button for
high score view, and updated the graphics for bomber, fast bomber, boss
1, 2, and 3.
changed

graphics
something

changed
updated

this
something

changed
Merge branch 'master' into carmi
something

chnaged
something

changed
something

changed
something

changed
something

changed
something

changed
some things

have changed
Changed graphics

weapon of second boss and player
Improved Graphics and more

graphics for ammos, buttons, enemies, bosses