Add an output directory and horizontal lines for the graphs

[poespas]

Adds some additions to the application:

• Adds the option to have an output directory to output the graphs to rather than popping up the graphs.
• Adds the option to show horizontal lines across the graph to indicate the support and resistance lines.
• Adds a "CRYPTO" ticker option to download the (at the time of writing) top 10 cryptos sorted by market cap.