add focus mode

.gitmodules

@@ -16,3 +16,6 @@
 [submodule "lib/yaml-mode"]
 	path = lib/yaml-mode
 	url = https://github.com/yoshiki/yaml-mode
+[submodule "lib/focus"]
+	path = lib/focus
+	url = https://github.com/larstvei/Focus

README.md

@@ -12,7 +12,7 @@ What's inside
   * [linum-plus](https://github.com/emacsmirror/linum-plus)
   * [markdown-mode](https://github.com/emacsmirror/markdown-mode)
   * [yaml-mode](https://github.com/yoshiki/yaml-mode)
-
+  * [focus-mode](https://github.com/larstvei/Focus)
 
 Update
 ------

lib/focus

@@ -0,0 +1 @@
+Subproject commit b90cfb3c2780b201f524c1bc15bd4b512bedd8ec