Update README to reflect multi-page site structure

Add table documenting all 6 pages (index, getting-started, services,
mocking, chaos, cli) and update local preview instructions.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: eamonnfaherty

README.md

@@ -11,9 +11,22 @@ Local Web Services provides two complementary CLI tools for local AWS CDK develo
 - **ldk** - Runs your AWS CDK applications locally as a development server
 - **lws** - AWS CLI-style commands for interacting with local services
 
+## Site structure
+
+| Page | File | Description |
+|------|------|-------------|
+| Landing | `index.html` | Hero, what/why, how it works, journey CTAs |
+| Get Started | `getting-started.html` | Installation, prerequisites, CDK + Terraform quick starts |
+| Services | `services.html` | All 25 AWS service emulations with operations |
+| Mocking | `mocking.html` | Mock servers: routes, protocols, OpenAPI, templates |
+| Chaos | `chaos.html` | Chaos engineering: error rates, latency, timeouts |
+| CLI | `cli.html` | Full ldk + lws + mock command reference |
+
+Shared styles live in `style.css`.
+
 ## Local preview
 
-Open `index.html` in a browser.
+Open `index.html` in a browser, then navigate between pages using the nav bar.
 
 ## Deployment