📝 Add tip about Keybinding Resolver to keymap.cson

Author: lee-dohm

dot-atom/keymap.cson

@@ -21,7 +21,12 @@
 # * https://atom.io/docs/latest/using-atom-basic-customization#customizing-key-bindings
 # * https://atom.io/docs/latest/behind-atom-keymaps-in-depth
 #
+# If you're having trouble with your keybindings not working, try the
+# Keybinding Resolver: Cmd+. on OS X and Ctrl+. on other platforms. See the
+# Debugging Guide for more information:
+# * https://atom.io/docs/v1.3.1/hacking-atom-debugging#check-the-keybindings
+#
 # This file uses CoffeeScript Object Notation (CSON).
-# If you are unfamiliar with CSON, you can read more about it in the 
+# If you are unfamiliar with CSON, you can read more about it in the
 # Atom Flight Manual:
 # https://atom.io/docs/latest/using-atom-basic-customization#cson