diff --git a/package.json b/package.json
index 321523d..e08c98b 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,8 @@
     "supertest": "^4.0.2"
   },
   "scripts": {
-    "test": "jest"
+    "test": "jest",
+    "install": "postinstall.js"
   },
   "repository": {
     "type": "git",
diff --git a/postinstall.js b/postinstall.js
new file mode 100644
index 0000000..e9754f0
--- /dev/null
+++ b/postinstall.js
@@ -0,0 +1,18 @@
+const fs = require('fs');
+const ncp = require('ncp').ncp;
+
+const pad0 = n => ('0'+n).substr(-2);
+
+const datetime = new Date();
+const dir = `./data/${datetime.getFullYear()}/${pad0(datetime.getMonth())}/${pad0(datetime.getDay())}/`;
+
+if (!fs.existsSync(dir)) {
+    fs.mkdirSync(dir, {recursive: true});
+}
+
+ncp('./sample_data/',dir, function(err){
+    if(err)
+        console.error(err);
+    else
+        console.log('done');
+});
\ No newline at end of file
diff --git a/sample_data/birthday-cake.png b/sample_data/birthday-cake.png
new file mode 100644
index 0000000..c5d5d9f
Binary files /dev/null and b/sample_data/birthday-cake.png differ
diff --git a/sample_data/index.md b/sample_data/index.md
new file mode 100644
index 0000000..8212cc1
--- /dev/null
+++ b/sample_data/index.md
@@ -0,0 +1,6 @@
+# Welcome to your new blog
+
+## If you see this page, that means it's working
+
+![missing image](./birthday-cake.png)
+