Replaced love.joystick.getJoystick with love.joystick.getJoysticks (returns a table of all connected joysticks), and renamed Joystick:getIndex to Joystick:getConnectedIndex

src/modules/joystick/sdl/wrap_JoystickModule.h

@@ -32,7 +32,7 @@ namespace joystick
 namespace sdl
 {
 
-int w_getJoystick(lua_State *L);
+int w_getJoysticks(lua_State *L);
 int w_getIndex(lua_State *L);
 int w_getJoystickCount(lua_State *L);
 int w_isGamepad(lua_State *L);