Goal: implement cryptocurrency data miner.

Definition of done:

• Elixir project which persists data (order book or trades) from any cryptocurrency exchange which offers futures trading (bitmex/okex/binance etc).
• Create separete repository with instructions how to run the project
• Follow gitflow https://dev.to/heratpatel/git-flow-a-successful-git-branching-model-1j6f
• Test coverage should be 80% at least
• Each commit should have meaningful title

Bonus points:

• Choose database wisely. Describe the reason of choosing your database.
• Add documentation which explains why

Points to aware:

• Make it as simple as possible
• Don't write functions for reading the data, it should persist only