README: Add instructions for including socket config in .dir-locals.el or .emacs.

Author: austinhaas

README.md

@@ -110,12 +110,29 @@ For Leiningen, add the following option to your ~/.lein/profiles.clj or your pro
 :jvm-opts ["-Dclojure.server.repl={:port 5555 :accept clojure.core.server/repl}"]
 ```
 
-Then run `lein repl` from within your project directory to start the REPL, and `C-c M-c RET localhost RET 5555` from within Emacs to connect.
+Then run `lein repl` from within your project directory to start the
+REPL, and `C-c M-c RET localhost RET 5555` from within Emacs to
+connect, or add the following to your `.dir-locals.el`
+```
+((nil . ((inf-clojure-lein-cmd . ("localhost" . 5555)))))
+```
+or the following to your `.emacs`
+```
+(setf inf-clojure-lein-cmd '("localhost" . 5555))
+```
 
 For boot, export the environment variable BOOT_JVM_OPTIONS:
 ```
 export BOOT_JVM_OPTIONS='-Dclojure.server.repl="{:port 5555 :accept clojure.core.server/repl}"'
 ```
+or add the following to your `.dir-locals.el`:
+```
+((nil . ((inf-clojure-boot-cmd . ("localhost" . 5555)))))
+```
+or the following to your `.emacs`
+```
+(setf inf-clojure-boot-cmd '("localhost" . 5555))
+```
 
 You can also start a socket server via the [Clojure CLI tools](https://clojure.org/guides/getting_started).
 Configuration options are described [here](https://dev.clojure.org/display/design/Socket+Server+REPL).