Add production deployment files:

- INSTALL.md: Complete installation guide in Spanish
       - setup.sh: Automatic setup script for dependencies
       - .env.example: Environment variables template
       - Updated requirements.txt and .gitignore

requirements.txt

@@ -1,16 +1,20 @@
 # Core dependencies
 Flask==2.3.3
 Flask-Babel==2.0.0
+python-dotenv==1.0.0
 
 # Database
-sqlite3  # Built-in, but listed for clarity
+# sqlite3 is built-in with Python
 
 # For CSV processing
-python-dotenv==1.0.0
+# No additional dependencies needed (csv is built-in)
 
 # For development/testing
 pytest==7.4.0
 pytest-cov==4.1.0
 
-# For running the application
+# For running the application in production
 waitress==2.1.2  # Production WSGI server
+
+# For production deployment (optional)
+# gunicorn==21.2.0  # Alternative WSGI server