1/28/2017 update notes

[list] [*]added a title screen [*]added option to toggle background music [*]added option to turn on mouse mode [list] [*]details on mouse mode: [*]left mouse click fires the weapon [*]right mouse click or keywoard key "R" reloads the weapon [*]note: mouse mode does not affect DLC weapon(s) [/list] [*]added iron sights to default weapon [*]made minor adjustments to existing sections [*]added 2 new sections [/list]