docs: add comprehensive documentation summary

- Document all added files and features
- Provide quick start guide for developers
- Include usage examples and next steps
- Detail automation and deployment setup

Author: wile44

DOCUMENTATION.md

@@ -0,0 +1,145 @@
+# AzamPay SDK Documentation Summary
+
+## 🎉 Documentation Added Successfully!
+
+I've created comprehensive OpenAPI documentation for the AzamPay SDK on the `feature/openapi-documentation` branch.
+
+## 📁 What's Been Added
+
+### Core Documentation Files
+- **`openapi.yaml`** - Complete OpenAPI 3.0 specification with all endpoints
+- **`docs/index.html`** - Interactive Swagger UI interface
+- **`docs/serve.js`** - Local development server
+- **`docs/README.md`** - Documentation guide and usage instructions
+
+### Testing & Development Tools
+- **`docs/azampay-sdk.postman_collection.json`** - Ready-to-use Postman collection
+- **`scripts/validate-openapi.js`** - OpenAPI specification validator
+- **`.github/workflows/docs.yml`** - Automated documentation deployment
+
+### Updated Files
+- **`package.json`** - Added documentation scripts
+- **`README.md`** - Added documentation section with quick access links
+
+## 🚀 Quick Start
+
+### 1. View Documentation Locally
+```bash
+# Start the documentation server
+npm run docs:serve
+
+# Open your browser to http://localhost:3000
+```
+
+### 2. Validate OpenAPI Spec
+```bash
+npm run docs:validate
+```
+
+### 3. Import Postman Collection
+- Import `docs/azampay-sdk.postman_collection.json` into Postman
+- Set your API credentials in collection variables
+- Start testing endpoints immediately
+
+## 📋 Documentation Features
+
+### ✅ Complete API Coverage
+- **Authentication**: Token generation and management
+- **Bank Checkout**: CRDB and NMB bank payments
+- **Mobile Money**: Airtel, Tigo, Halopesa, Azampesa, Mpesa
+- **Disbursements**: International money transfers
+- **Name Lookup**: Account verification
+- **Transaction Status**: Payment monitoring
+- **Payment Partners**: Provider management
+
+### ✅ Interactive Testing
+- Try endpoints directly from Swagger UI
+- Real request/response examples
+- Schema validation and error handling
+- Authentication setup with API keys and tokens
+
+### ✅ Developer Experience
+- Multiple environment support (SANDBOX/LIVE)
+- Comprehensive error response documentation
+- Request/response schema definitions
+- Code examples and best practices
+
+### ✅ Automation Ready
+- GitHub Actions for automatic deployment
+- OpenAPI validation in CI/CD
+- Postman collection with auto-token management
+
+## 🔧 Available Scripts
+
+```bash
+# Serve documentation locally
+npm run docs:serve
+npm run docs:dev
+
+# Validate OpenAPI specification
+npm run docs:validate
+```
+
+## 🌐 Deployment
+
+The documentation is configured for automatic deployment via GitHub Actions:
+- Deploys on pushes to `main` branch
+- Validates OpenAPI spec before deployment
+- Generates static documentation with ReDoc
+- Can be configured with custom domain
+
+## 📊 Documentation Statistics
+
+- **OpenAPI Version**: 3.0.3
+- **API Endpoints**: 8 paths with 8 operations
+- **Schema Definitions**: 19 comprehensive schemas
+- **Environments**: 2 (Sandbox & Live)
+- **Authentication Methods**: Bearer Token + API Key
+
+## 🎯 Next Steps
+
+1. **Merge the branch** when ready to deploy
+2. **Configure GitHub Pages** for automatic documentation hosting
+3. **Set up custom domain** (optional) in GitHub Actions workflow
+4. **Share with developers** - they can now easily integrate with AzamPay!
+
+## 💡 Usage Examples
+
+### For SDK Users
+```javascript
+// The documentation shows exactly how to use the SDK
+import azampay from 'azampay';
+
+const token = await azampay.getToken({
+  env: 'SANDBOX',
+  clientId: 'your-client-id',
+  appName: 'Your App',
+  clientSecret: 'your-secret',
+  apiKey: 'your-api-key'
+});
+
+const payment = await token.bankCheckout({
+  amount: '10000',
+  currencyCode: 'TZS',
+  // ... other fields as documented
+});
+```
+
+### For API Integration
+Developers can now use the OpenAPI spec to:
+- Generate client SDKs in any language
+- Import into API testing tools
+- Understand exact request/response formats
+- Implement proper error handling
+
+## 🤝 Maintenance
+
+The documentation is designed to be:
+- **Self-validating** with automated checks
+- **Version-synced** with package.json
+- **Easy to update** by editing openapi.yaml
+- **Automatically deployed** via GitHub Actions
+
+---
+
+**Ready to help developers integrate with AzamPay more easily! 🚀**