Update backtrade.coffee

Streamlined the backtest code, removing requirement of CSV historical data, as it will take historical data from Cryptotrader this way, and backtest it as if it were live trading.
Create backtest.sh

Added shell script, to easily run backtest. Run it exactly as you would run it live.
Update README.md
Update backtrade.coffee

Updated usage info
Update backtrade.coffee
Update README.md
Update README.md

Scripts need to have self-checking functions to ensure it's not buying/selling at every tick the script considers bullish or bearish.
Update README.md
Merge pull request #1 from D-Nice/master

Pulling new code for backtest