added a shortcut for firefox

config.h

@@ -67,13 +67,14 @@ static const char *downvol[] = { "/usr/bin/pactl", "set-sink-volume", "0", "-5%"
 static const char *mutevol[] = { "/usr/bin/pactl", "set-sink-mute",   "0", "toggle",  NULL };
 static const char *light_up[] = {"/usr/bin/light", "-A", "5", NULL};
 static const char *light_down[] = {"/usr/bin/light", "-U", "5", NULL};
-
+static const char *firefox[] = { "firefox", NULL };
 
 static const Key keys[] = {
 	/* modifier                     key        function        argument */
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
 	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
 	{ MODKEY,                       XK_b,      togglebar,      {0} },
+	{ MODKEY,			XK_c,	   spawn,          {.v = firefox} },
 	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },
 	{ MODKEY,                       XK_k,      focusstack,     {.i = -1 } },
 	{ MODKEY,                       XK_i,      incnmaster,     {.i = +1 } },