Add example to readme

README.md

@@ -17,6 +17,19 @@ Features that have yet to be implemented but are planned:
 - Improved file slug/id handling
 - Plugin API
 
+## Example Usage
+
+```javascript
+import { Vault } from "@foundry/hammerstone";
+
+const vault = new Vault("./my-vault");
+vault.process((document) => {
+  document.setFrontmatter({ "Last Processed": Date.now() });
+});
+
+vault.write();
+```
+
 ## API
 
 ### `new Vault(vaultRootPath)`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@foundry/hammerstone",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "description": "Load and manipulate Obsidian vault data",
   "type": "module",
   "exports": "./bin/hammerstone.js",