refactor: add readme files (#19)

* refactor: add readme files

* chore: bump version

Author: gao-sun

packages/mcp-auth/README.md

@@ -0,0 +1,26 @@
+# MCP Auth Node.js SDK
+
+The MCP specification [requires OAuth 2.1 and other RFCs](https://modelcontextprotocol.io/specification/2025-03-26/basic/authorization) for authorization. Instead of implementing all the OAuth 2.1 and OpenID Connect standards yourself, a **production-ready provider** and a set of **libraries and tutorials** can save you a lot of time and effort.
+
+That's where MCP Auth comes in. It includes:
+
+1. An updated OAuth 2.1 and OpenID Connect provider list that meets the MCP requirements.
+2. A set of provider-agnostic libraries and tools to help you integrate your MCP server with any compliant provider.
+3. Practical tutorials and examples to get you started quickly.
+
+And yes, it can be as simple as a few lines of code:
+
+```ts
+const server = new McpServer(/* ... */);
+const mcpAuth = new MCPAuth({
+  server: await fetchServerConfig('<auth-server-url>', { type: 'oidc' }),
+});
+const app = express();
+
+app.use(mcpAuth.bearerAuth('jwt', { requiredScopes: ['read', 'write'] }));
+server.tool('whoami', ({ authInfo }) => {
+  // Use `authInfo` to access the auth information carried from `req.auth`
+});
+```
+
+See [the documentation](https://mcp-auth.dev) for the full guide.

packages/mcp-auth/package.json

@@ -1,8 +1,8 @@
 {
   "name": "mcp-auth",
-  "version": "0.1.0-beta.0",
+  "version": "0.1.0-beta.1",
   "author": "Silverhand Inc. <contact@silverhand.io>",
-  "description": "Connect your MCP server to any eligible OAuth 2 or OpenID Connect provider",
+  "description": "Plug and play auth for Model Context Protocol (MCP) servers",
   "keywords": [
     "modelcontextprotocol",
     "mcp",

packages/sample-servers/README.md

@@ -0,0 +1,5 @@
+# MCP Auth sample servers
+
+This package contains sample servers that demonstrate how to use the MCP Auth Node.js SDK in various scenarios.
+
+See [the documentation](https://mcp-auth.dev/docs/get-started) for the full guide.