diff --git a/README.md b/README.md
index de95b17..963da73 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,16 @@
 
 A Clojure library designed to ... well, that part is up to you.
 
-## Usage
+## REPL
 
-FIXME
+### serverside with vim-fireplace and Piggieback
+
+* `lein repl`
+* In the repl, `(start)` to launch a cljs repl.
+* In vim, `:Connect`, then `:Piggieback (weasel.repl.websocket/repl-env :port 45192)`
+* In the cljs repl, `(require 'picture-processor.repl)`
+* ...and then `(picture-processor.repl/start 45192)`
+* Evaluate away!
 
 ## License
 
diff --git a/project.clj b/project.clj
index 75d0700..1c298a8 100644
--- a/project.clj
+++ b/project.clj
@@ -6,13 +6,14 @@
   :plugins [[lein-cljsbuild "1.1.2"]
             [lein-npm "0.6.1"]]
   :source-paths ["src"]
-  :npm { :dependencies [[ws "0.4.30"] ]}
+  :npm { :dependencies [[ws "0.4.30"]]}
   :cljsbuild {
               :builds [{:source-paths ["src"]
                         :compiler {
                                    :target :nodejs
                                    :optimizations :simple}}]}
-  :profiles {:dev {:dependencies [[com.cemerick/piggieback "0.2.1"]
+  :profiles {:dev {:source-paths ["dev-src"]
+                   :dependencies [[com.cemerick/piggieback "0.2.1"]
                                   [org.clojure/tools.nrepl "0.2.10"]]
                    :repl-options {:nrepl-middleware [cemerick.piggieback/wrap-cljs-repl]
                                   :init (do