* replace pymarketcap with coinmarketcap
* fix tests to use coinmarketcap instead of pymarketcap
* use arraypos 0
* update setup.py from pymarketcap to coinmarketcap
* Add test to check for unsupported Crypto currency
- Update, clean, and improve code coverage on main.py
- Move bot trading logic into Freqtradebot() class
- Move unit tests to test_freqtradebot, add more coverage tests