Drop the mentions of Marmalade from the README

Author: bbatsov

README.md

@@ -16,10 +16,10 @@ For a more powerful/full-featured solution see [CIDER][].
 
 ## Installation
 
-Available on all major `package.el` community maintained repos -  [MELPA Stable][],
-[MELPA][] and [Marmalade][] repos.
+Available on all major `package.el` community maintained repos -
+[MELPA Stable][] and [MELPA][] repos.
 
-MELPA Stable and Marmalade are recommended as they have the latest stable version.
+MELPA Stable is recommended as it has the latest stable version.
 MELPA has a development snapshot for users who don't mind breakage but
 don't want to run from a git checkout.
 
@@ -102,7 +102,6 @@ Distributed under the GNU General Public License; type <kbd>C-h C-c</kbd> to vie
 [melpa-stable-badge]: http://stable.melpa.org/packages/inf-clojure-badge.svg
 [melpa-package]: http://melpa.org/#/inf-clojure
 [melpa-stable-package]: http://stable.melpa.org/#/inf-clojure
-[marmalade]: https://marmalade-repo.org
 [COPYING]: http://www.gnu.org/copyleft/gpl.html
 [badge-travis]: https://travis-ci.org/clojure-emacs/inf-clojure.svg?branch=master
 [CIDER]: https://github.com/clojure-emacs/cider