Fix Makefile and KeyValue example

Makefile

@@ -7,8 +7,8 @@ test: deps
 	npm run test
 	
 build: test
-	npm run build
 	mkdir -p examples/browser/lib/
+	npm run build
 	cp dist/orbitdb.min.js examples/browser/lib/orbitdb.min.js
 	cp node_modules/ipfs/dist/index.min.js examples/browser/lib/ipfs.min.js
 	@echo "Build success!"

examples/keyvalue.js

@@ -7,6 +7,9 @@ const userId = 1
 const creatures = ['🐙', '🐬', '🐋', '🐠', '🐡', '🦀', '🐢', '🐟', '🐳']
 
 const output = (user) => {
+  if (!user)
+    return
+
   let output = ``
   output += `----------------------\n`
   output += `User\n`