Axel Gard

There seems to be a problem with `pdfkit.from_url(['google.com', 'yandex.ru', 'engadget.com'], 'out.pdf')` But this is given as en example in the readme, so I assume that is how it should work....

Add crypto api `https://data.alpaca.markets/v1beta1/crypto` https://alpaca.markets/docs/api-references/market-data-api/crypto-pricing-data/

For crypto or fractional stocks, need to be able to Handel fraction of a stock or crypto

```python from alpaca.data import OptionHistoricalDataClient option_client = OptionHistoricalDataClient("api-key", "secret-key") ```

The read me and docs have gotten quite messy and unstructured. Do some clean up. - [ ] README 🧼 - [ ] Docs 🧼