Add explicit dependency on cl-generic

Attempt to install cl-generic forward-compatibility package from elpa
for testing Emacs 24.

.travis.yml

@@ -19,6 +19,9 @@ install:
   - if [ "$EMACS" = 'emacs25' ] || [ "$EMACS" = 'emacs-snapshot' ]; then
         sudo add-apt-repository -y ppa:ubuntu-elisp/ppa;
     fi
+  - if [ "$EMACS" = 'emacs24' ]; then
+        $EMACS --batch --eval "(progn (package-initialize) (package-install 'cl-generic))";
+    fi
   - sudo apt-get -qq update && sudo apt-get -qq -f install && sudo apt-get -qq install $EMACS $EMACS-el
 
 script:

julia-mode.el

@@ -4,7 +4,7 @@
 ;; URL: https://github.com/JuliaEditorSupport/julia-emacs
 ;; Version: 0.4
 ;; Keywords: languages
-;; Package-Requires: ((emacs "24.3"))
+;; Package-Requires: ((emacs "24.3") (cl-generic "0.3"))
 
 ;;; Usage:
 ;; Put the following code in your .emacs, site-load.el, or other relevant file
@@ -37,6 +37,7 @@
 ;;; Code:
 
 (require 'cl-lib)
+(require 'cl-generic)
 (require 'julia-mode-latexsubs)
 (require 'project nil t)