Set your emacs PATH to match shell PATH

emacs_path_to_shell_path

;;ADD THIS TO INIT.EL

;; set the path as terminal path [http://lists.gnu.org/archive/html/help-gnu-emacs/2011-10/msg00237.html]
(setq explicit-bash-args (list "--login" "-i"))

;; fix the PATH variable for GUI [http://clojure-doc.org/articles/tutorials/emacs.html#osx] 

(defun set-exec-path-from-shell-PATH ()
  (let ((path-from-shell
         (shell-command-to-string "$SHELL -i -l -c 'echo $PATH'")))
    (setenv "PATH" path-from-shell)
    (setq exec-path (split-string path-from-shell path-separator))))

(when window-system (set-exec-path-from-shell-PATH))