[#34] fixed the PS4 home button mapping under Firefox
[#34] fixed the PS4 home button mapping under Firefox

see below for the full explanation :

https://github.com/melonjs/melonJS/commit/2748d0feb23f2d7cf768abf823f7a234963fbc7c

rlugojr/melonJS,srbala/melonJS,melonjs/melonJS,melonjs/melonJS,rlugojr/melonJS,rlugojr/melonJS,srbala/melonJS,srbala/melonJS