4 files changed, 21 insertions, 7 deletions
diff --git a/.gitignore b/.gitignore
index 254a354..32e9bab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ public/javascripts/client.js
 sessionKey
 deploy
 kimsufi.tar.gz
+node_modules
diff --git a/README.md b/README.md
index 8cfbe01..42a3802 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Share costs with a group of people.
 ```
 cabal sandbox init
 cabal install --only-dependencies
-cabal build
 elm package install
-./dist/build/sharedCost/sharedCost
+npm install
+npm run watch
 ```
diff --git a/gen b/gen
deleted file mode 100755
index 5e5358d..0000000
--- a/gen
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-trap 'fuser -k 3000/tcp' EXIT
-elm-make src/client/Main.elm --output public/javascripts/client.js \
-  && cabal build  \
-  && ./dist/build/sharedCost/sharedCost
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..ad80280
--- /dev/null
+++ b/package.json
@@ -0,0 +1,18 @@
+{
+  "devDependencies": {
+    "watch": "0.16.0"
+  },
+  "scripts": {
+    "watch": "npm run watch-server & npm run watch-client",
+    "watch-server": "watch 'npm run build-and-launch-server' src/server",
+    "watch-client": "watch 'npm run build-client' src/client",
+
+    "build": "npm run build-server && npm run build-client",
+    "build-server": "cabal build",
+    "build-client": "elm make src/client/Main.elm --output public/javascripts/client.js",
+
+    "build-and-launch-server": "npm run build-server && npm run kill-server && npm run launch-server",
+    "launch-server": "./dist/build/sharedCost/sharedCost &",
+    "kill-server": "pkill sharedCost || true"
+  }
+}