Create JSON input files

[computerise]

JSON input files should consist of company Ticker Symbols containing other associated data, for example:

{
    "MSFT": {
        "name": "Microsoft Corporation Common Stock",
        "exchange": "NASDAQ-GS",
        "sector": "Technology",
        "industry": "Computer Software: Prepackaged Software",
        "market_cap": 2280538394128
    },
    "AAPL": {
        "name": "Apple Inc. Common Stock",
        "exchange": "NASDAQ-GS",
        "sector": "Technology",
        "industry": "Computer Manufacturing",
        "market_cap": 2942493344800
    },
    "GOOGL": {
        "name": "Alphabet Inc. Class A Common Stock",
        "exchange": "NASDAQ-GS",
        "sector": "Technology",
        "industry": "Internet and Information Services",
        "market_cap": 1347658308378
    }
}

All field names should conform to python snake_case.

Creating custom sets of hand picked stocks, or gathering large sets of data would be helpful. Related to #11