diff --git a/README.md b/README.md
index 1f416fc..87d9c79 100644
--- a/README.md
+++ b/README.md
@@ -15,16 +15,34 @@ npm install -g node-red-flow-drawer
 ```
 flow-drawer -h
 
-Usage: flow-drawer [options] <inputFile> [outputDir]
+Usage: flow-drawer [options] <inputFileOrDir> [outputDir]
 
 Options:
 
   -v, --version          output the version number
-  -f, --format <format>  export data format (html, json or images) (default: html)
-  -n, --nodes <file>     path to file with custom node descriptions
+  -f, --format <format>  export data format (html, json or img) (default: html)
+  -n, --nodes <file>     path to a file with custom node descriptions
+  -s, --stdout           print results to the stdout (will be ignored for batch processing)
   -h, --help             output usage information
+```
+
+### Custom node descriptions
 
-flow-drawer --format=json input.json > output.json
+This file should contain `RED.nodes.registerType` calls for your custom nodes and the line `const RED = this.RED;` at the top of the file. For instance:
+
+```javascript
+const RED = this.RED;
+
+RED.nodes.registerType('Cache in',{
+    category: 'input',
+    defaults: {
+      name: { name: '' },
+    },
+    color: 'Turquoise',
+    inputs: 1,
+    outputs: 1,
+    icon: "db.png",
+});
 ```
 
 ### TODO
@@ -72,7 +90,9 @@ new FlowDrawer(flows, options)
 * Use Node-RED fonts
 * Solid frame around flow's nodes
 * Proper handling of unnamed nodes
+* Tests
  
  ## License
 
- [MIT](/LICENSE)
\ No newline at end of file
+ [MIT](/LICENSE)
+ 
\ No newline at end of file
diff --git a/package.json b/package.json
index 2f87cf4..3a51167 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-red-flow-drawer",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "A Node-RED flow drawer",
   "main": "src/flow-drawer.js",
   "scripts": {
diff --git a/src/cli/flow-drawer.js b/src/cli/flow-drawer.js
index b488f3d..ae608f6 100644
--- a/src/cli/flow-drawer.js
+++ b/src/cli/flow-drawer.js
@@ -8,7 +8,7 @@ let inputFileOrDirValue;
 let outputDirValue;
 
 program
-    .version('0.0.2', '-v, --version')
+    .version('0.0.3', '-v, --version')
     .arguments('<inputFileOrDir> [outputDir]')
     .action((inputFileOrDir, outputDir) => {
         inputFileOrDirValue = inputFileOrDir;