added deft to required packages

prelude-packages.el

@@ -41,8 +41,9 @@
 (when (not package-archive-contents)
   (package-refresh-contents))
 
-(defvar prelude-packages '(clojure-mode coffee-mode gist haml-mode
-                                  haskell-mode magit markdown-mode paredit
+(defvar prelude-packages
+  '(clojure-mode coffee-mode deft gist haml-mode
+                 haskell-mode inf-ruby magit markdown-mode paredit
                  sass-mode scss-mode yaml-mode yari yasnippet)
   "A list of packages to ensure are installed at launch.")