update readme

Author: flyingmachine

README.md

@@ -3,19 +3,6 @@
 If you're new to emacs, check out
 [this introductory tutorial](http://www.braveclojure.com/basic-emacs/)!
 
-## WARNING
-
-This project uses an outdated version of
-[CIDER](https://github.com/clojure-emacs/cider), the package that
-provides much of the functionality for Clojure development. If you run
-into issues, try upgrading (instructions below).
-
-Why not just update this package to use the latest CIDER, you ask?
-This project uses CIDER 0.8.1 so that
-[Clojure for the Brave and True](http://www.braveclojure.com/basic-emacs/)
-readers are less likely to get confused as they use Emacs for the
-first time.
-
 ## Installing
 
 1. Close Emacs.
@@ -30,13 +17,6 @@ first time.
    and unzip it. Its contents should be a folder,
    `emacs-for-clojure-book1`. Run `mv path/to/emacs-for-clojure-book1
    ~/.emacs.d`.
-4. Create the file `~/.lein/profiles.clj` (Windows users, this is
-   probably `C:\Users\your_user_name\.lein\profiles.clj`) and add this
-   line to it:
-
-```clojure
-{:user {:plugins [[cider/cider-nrepl "0.8.1"]]}} 
-```
 
 Then open Emacs.
 
@@ -63,7 +43,6 @@ To upgrade:
 5. In Emacs, run `M-x package-refresh contents`.
 6. In Emacs, run `M-x package-install cider`.
 7. Close and re-open Emacs.
-8. Open `.lein/profiles.clj` and remove `[cider/cider-nrepl "0.8.1"]` from it.
 
 That should install the latest version. Enjoy!