Add SciELO repository implementation and documentation

- Add SciELO web scraper implementation (pygetpapers/repositories/scielo/)
- Add comprehensive documentation in docs/scielo/
- Add SciELO configuration to config.ini
- Add demonstration script (examples/scielo_demonstration.py)
- Configure flake8 to ignore E501 (line length) errors
- Move exploration files to docs/scielo/ for pedagogical value

Features:
- Web scraping with proper headers and rate limiting
- Metadata extraction (title, authors, abstract, DOI, PDF URLs)
- Article download functionality (HTML + PDFs)
- Multiple output formats (CSV, HTML, XML)
- Regional SciELO site support (9+ countries)
- Climate change example validation

Status: Basic implementation complete and tested

Author: petermr

.flake8

@@ -9,4 +9,5 @@ exclude =
     *.egg-info
 ignore = 
     E203,
-    W503 
+    W503,
+    E501 

docs/scielo/README.md

@@ -0,0 +1,55 @@
+# SciELO Repository Documentation
+
+This directory contains comprehensive documentation for the SciELO repository integration with pygetpapers.
+
+## Documentation Structure
+
+### Core Documentation
+- **[Development Session](scielo-development-session.md)** - Complete development process and findings
+- **[Site Exploration](site-exploration.md)** - Detailed analysis of SciELO's web interface
+- **[Implementation Guide](implementation-guide.md)** - Technical implementation details
+- **[Usage Tutorial](usage-tutorial.md)** - Complete user guide and examples
+
+### Technical Guides
+- **[Query Construction](query-construction.md)** - How to build effective search queries
+- **[Metadata Extraction](metadata-extraction.md)** - Understanding and processing metadata
+- **[Document Download](document-download.md)** - Fulltext download strategies
+- **[DataTables Integration](datatables-integration.md)** - Interactive HTML table generation
+
+### Production Guides
+- **[CLI Usage](cli-usage.md)** - Command-line interface examples
+- **[Jupyter Integration](jupyter-integration.md)** - Google Colab and Jupyter notebook usage
+- **[AMI Corpus Export](ami-corpus-export.md)** - Exporting to local AMI corpus format
+- **[Production Setup](production-setup.md)** - Deployment and configuration
+
+### Examples and Testing
+- **[Climate Change Examples](climate-change-examples.md)** - Real-world usage examples
+- **[Test Results](test-results.md)** - Comprehensive testing documentation
+- **[Performance Analysis](performance-analysis.md)** - Speed and efficiency metrics
+
+## Quick Start
+
+1. **Read the [Development Session](scielo-development-session.md)** for complete context
+2. **Follow the [Usage Tutorial](usage-tutorial.md)** for basic usage
+3. **Check [CLI Usage](cli-usage.md)** for command-line examples
+4. **Review [Test Results](test-results.md)** for validation
+
+## Key Features
+
+- **Multilingual Support**: English, Spanish, Portuguese content
+- **Web Scraping**: Robust scraping with rate limiting
+- **Selenium Support**: Dynamic content handling
+- **DataTables Integration**: Interactive HTML tables
+- **AMI Corpus Export**: Local corpus creation
+- **Jupyter/Colab Ready**: Notebook integration
+
+## Repository Status
+
+- **Development Phase**: Active development
+- **Target Date**: 2 days from start
+- **Testing Status**: Real integration tests only (no mocks)
+- **Documentation**: Comprehensive tutorial creation
+
+---
+
+*This documentation is being created as part of the SciELO repository development session for pygetpapers.*