Add Bitcoin Trading Signal System with MACD and News Sentiment Analysis

- Implement comprehensive Bitcoin trading signal system
- Add MACD (Moving Average Convergence Divergence) indicator
- Integrate news sentiment analysis from CryptoCompare
- Combine technical analysis with market sentiment
- Generate trading recommendations (Strong Buy, Buy, Hold, Sell, Strong Sell)

Features:
- Real-time Bitcoin price data from Binance and CoinGecko APIs
- Historical data analysis with MACD indicator
- News sentiment analysis with keyword-based scoring
- Weighted signal combination (60% MACD, 40% Sentiment)
- Confidence scoring for each recommendation
- Detailed reasoning for trading signals
- CLI interface with verbose and quick modes

Components:
- data_fetcher.py: Bitcoin price and market data retrieval
- macd_indicator.py: MACD calculation and signal generation
- news_sentiment.py: News analysis and sentiment scoring
- signal_generator.py: Combined signal generation
- bitcoin_trader.py: Main CLI application

Usage:
  python bitcoin_trading/bitcoin_trader.py [--verbose] [--days N] [--quick]

Documentation in bitcoin_trading/README.md

bitcoin_trading/requirements.txt

@@ -0,0 +1,20 @@
+# Bitcoin Trading Signal System - Python Dependencies
+
+# Data Processing
+pandas>=2.0.0
+numpy>=1.24.0
+
+# HTTP Requests
+requests>=2.31.0
+
+# Optional: Enhanced Sentiment Analysis
+# textblob>=0.17.0
+# vaderSentiment>=3.3.2
+
+# Optional: Advanced Technical Analysis
+# ta>=0.11.0
+# pandas-ta>=0.3.14b0
+
+# Development/Testing (optional)
+# pytest>=7.4.0
+# pytest-cov>=4.1.0