Release version 1.0.1

- Add Twig template engine integration
- Migrate all templates to Twig format
- Add German (Switzerland, Informal) translation
- Improve template organization and security
- Add Composer dependency management
- Create comprehensive changelog

QUICKSTART.md

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+# Quick Start Guide
+
+Get started with WooCommerce Tier and Package Prices in 5 minutes!
+
+## Step 1: Install (2 minutes)
+
+1. Go to **Plugins > Add New** in WordPress
+2. Click **Upload Plugin**
+3. Choose `wc-tier-and-package-prices.zip`
+4. Click **Install Now** then **Activate**
+
+✓ Done! Plugin is active.
+
+## Step 2: Basic Setup (1 minute)
+
+1. Go to **WooCommerce > Tier & Package Prices**
+2. Make sure all checkboxes are checked:
+   - ✓ Enable Tier Pricing
+   - ✓ Enable Package Pricing
+   - ✓ Display Pricing Table
+3. Set Display Position to **Before Add to Cart**
+4. Click **Save Changes**
+
+## Step 3: Add Pricing to a Product (2 minutes)
+
+### Example: Selling T-Shirts
+
+1. Edit a product (or create new one)
+2. Set regular price: **$20.00**
+
+#### Add Volume Discounts
+
+Click **Add Tier** and create:
+- Min Qty: `10` → Price: `$18.00` (10% off)
+- Min Qty: `25` → Price: `$16.00` (20% off)
+
+#### Add Package Deals
+
+Click **Add Package** and create:
+- Qty: `12` → Price: `$200` → Label: "Team Pack"
+- Qty: `24` → Price: `$360` → Label: "Bulk Order"
+
+5. Click **Update** to save
+
+## Step 4: Test It!
+
+1. Visit your product page
+2. See the pricing table appear
+3. Change quantity to `12` → price updates automatically
+4. Click "Select Package" on Team Pack → quantity changes to 12
+5. Add to cart → verify price is correct ($200)
+
+## That's It!
+
+Your tier and package pricing is now working!
+
+## Common Use Cases
+
+### Wholesale Store
+```
+Tier 1: 10+ items = $X each
+Tier 2: 50+ items = $Y each
+Tier 3: 100+ items = $Z each
+```
+
+### Bulk Packages
+```
+Package 1: 6 items = $XX
+Package 2: 12 items = $YY
+Package 3: 24 items = $ZZ
+```
+
+### Mixed Approach
+Use tiers for flexible quantities (10+, 25+, 50+)
+Use packages for common bundles (6-pack, dozen, case)
+
+## Pro Tips
+
+1. **Round Numbers**: Use 10, 25, 50, 100 for tiers
+2. **Meaningful Savings**: Offer at least 10% off per tier
+3. **Label Packages**: "Family Pack" sells better than "4-pack"
+4. **Test Checkout**: Always complete a test order
+5. **Mobile Check**: View on phone to verify responsiveness
+
+## Need More Help?
+
+- Full documentation: [README.md](README.md)
+- Detailed examples: [USAGE_EXAMPLES.md](USAGE_EXAMPLES.md)
+- Installation help: [INSTALLATION.md](INSTALLATION.md)
+
+## Keyboard Shortcuts (Admin)
+
+- Add new tier: Click "Add Tier" button
+- Remove tier: Click "Remove" button on that tier
+- Save: Press Ctrl+S (or Cmd+S on Mac) to save product
+
+Happy selling!