diff --git a/README.md b/README.md
index a24c747..a87bfc9 100644
--- a/README.md
+++ b/README.md
@@ -25,3 +25,6 @@ To build the .bundle.js from .jsx files:
   npm install
   npm run build
   ```
+
+Development builds are also available. `npm run build-dev` to re/build once, or `npm run start-dev` for incremental
+continuous builds as source files change.
\ No newline at end of file
diff --git a/package.json b/package.json
index d477364..5ffc98c 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,9 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "start": "npx webpack --watch",
-    "build": "npx webpack"
+    "build": "npx webpack",
+    "start-dev": "npx webpack --watch --mode=development --devtool=inline-source-map",
+    "build-dev": "npx webpack --mode=development --devtool=inline-source-map"
   },
   "repository": {
     "type": "git",