Add comprehensive demo data with articles and VirtueMart sample data

data/demo/articles/membership/README.md

@@ -0,0 +1,90 @@
+# Membership Website Articles
+
+This directory contains sample articles for membership-based websites using MembershipPro.
+
+## Contents
+
+The `articles.j2xml` file includes:
+
+1. **Membership Home** - Membership portal welcome page
+2. **Membership Plans** - Available subscription tiers
+3. **Member Benefits** - What members get
+4. **Member Resources** - Exclusive member content
+5. **Member Dashboard Guide** - How to use the dashboard
+6. **Upgrade Your Membership** - Tier upgrade information
+7. **Member Support** - Help for members
+8. **Membership Terms** - Subscription terms and conditions
+
+## Installation
+
+1. Install the **j2xml** component in your Joomla installation
+2. Navigate to: **Components > j2xml > Import**
+3. Select the `articles.j2xml` file
+4. Click **Import**
+5. Review imported articles in **Content > Articles**
+
+## What Gets Imported
+
+- 8 membership-focused articles
+- Categories: Membership, Benefits, Support
+- Access level configuration examples
+- Member-only content templates
+
+## Post-Import Steps
+
+1. **Configure Access Levels**: Set appropriate access levels for member-only content
+2. **Link to MembershipPro**: Integrate with MembershipPro subscription system
+3. **Customize Plans**: Update subscription tiers and pricing
+4. **Add Benefits**: Detail your specific member benefits
+5. **Setup Member Dashboard**: Configure member portal links
+
+## Integration with MembershipPro
+
+These articles work with MembershipPro:
+- Display membership plans
+- Link from member dashboard
+- Show in members-only menu
+- Reference in subscription emails
+- Use in member onboarding
+
+## Access Levels
+
+Consider setting these access levels:
+- **Public** - Membership info pages
+- **Registered** - Dashboard guides
+- **Premium Member** - Exclusive resources
+- **VIP Member** - Top-tier content
+
+## Article List
+
+| Title | Category | Access Level | Purpose |
+|-------|----------|--------------|---------|
+| Welcome Members | Membership | Registered | Portal home |
+| Membership Plans | Membership | Public | Plan comparison |
+| Member Benefits | Membership | Public | Benefits overview |
+| Member Resources | Resources | Registered+ | Exclusive content |
+| Dashboard Guide | Support | Registered | Help guide |
+| Upgrade Membership | Membership | Registered | Upsell page |
+| Member Support | Support | Registered | Help desk |
+| Membership Terms | Legal | Public | Terms |
+
+## Best Practices
+
+- Clearly communicate value proposition
+- Make upgrade paths obvious
+- Provide excellent member support
+- Regular member-only content updates
+- Engage members with exclusive offers
+
+## Dependencies
+
+- Joomla 4.x or 5.x
+- j2xml component
+- MembershipPro component (recommended)
+- Moko-Cassiopeia template
+
+## Version
+
+Version: 1.0.0
+Last Updated: 2026-01-29
+Compatible with: Joomla 4.x, 5.x, MembershipPro 3.x+