added flycheck-mode

core/prelude-packages.el

@@ -43,7 +43,8 @@
 (setq url-http-attempt-keepalives nil)
 
 (defvar prelude-packages
-  '(ack-and-a-half elisp-slime-nav exec-path-from-shell expand-region gist
+  '(ack-and-a-half elisp-slime-nav exec-path-from-shell expand-region
+                   flycheck-mode gist
                    guru-mode helm helm-projectile magit magithub melpa
                    rainbow-mode solarized-theme volatile-highlights yasnippet
                    zenburn-theme)

modules/prelude-programming.el

@@ -120,6 +120,7 @@
     ;; keep the whitespace decent all the time (in this buffer)
     (add-hook 'before-save-hook 'whitespace-cleanup nil t)
     (whitespace-mode +1))
+  (flycheck-mode +1)
   (prelude-local-comment-auto-fill)
   (prelude-add-watchwords))