dev: Change the C styling settings

Use two spaces as indention and the linux coding style. Extend the
fill column to 100.

.emacs.d/config/dev.el

@@ -46,3 +46,11 @@
   (interactive (list (read-directory-name "Find files in directory: " nil "" t)))
   (let ((find-program "git-find"))
     (find-dired dir "")))
+
+;; c
+(setq c-default-style "linux"
+      c-basic-offset 2)
+
+(add-hook 'c-mode-hook
+          (lambda ()
+            (set-fill-column 100)))