add screen lock hotkey; closes #215

README.rst

@@ -144,7 +144,7 @@ Blackburn and Dremora use Icons_, Vertex uses FontAwesome_: be sure to have bitm
 
 Additional default software used: ::
 
-    unclutter firefox scrot mpd mpc dmenu xsel
+    unclutter firefox scrot mpd mpc dmenu xsel xlock
 
 .. _BY-NC-SA: http://creativecommons.org/licenses/by-nc-sa/4.0
 .. _b0ab0d7: https://github.com/lcpz/awesome-copycats/tree/b0ab0d7837987be81b9195a36631df773113d491

rc.lua.template

@@ -80,6 +80,7 @@ local editor       = os.getenv("EDITOR") or "nano"
 local gui_editor   = "gvim"
 local browser      = "firefox"
 local guieditor    = "atom"
+local scrlocker    = "xlock"
 
 awful.util.terminal = terminal
 awful.util.tagnames = { "1", "2", "3", "4", "5" }
@@ -227,6 +228,10 @@ globalkeys = awful.util.table.join(
     awful.key({ altkey }, "p", function() os.execute("screenshot") end,
               {description = "take a screenshot", group = "hotkeys"}),
 
+    -- X screen locker
+    awful.key({ altkey, "Control" }, "l", function () os.execute(scrlocker) end,
+              {description = "lock screen", group = "hotkeys"}),
+
     -- Hotkeys
     awful.key({ modkey,           }, "s",      hotkeys_popup.show_help,
               {description = "show help", group="awesome"}),