Develop RSI strategy

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https://www.sunshineprofits.com/gold-silver/dictionary/rsi-indicator/

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https://github.com/TulipCharts/tulipnode

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Use RSI:
if MACD says buy and RSI is lower than 50, place order..
if MACD says sell and RSI is upper than 50, place order..

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calculate caída y subida de la pendiente RSI
if raise, it is secure for buying.
if fall, it is secure for selling.