PEP8-ified all python source files with autopep8
fixed nonce issues with more than 1 api call per second
added in ema signal type based on http://sentdex.com/sentiment-analysisbig-data-and-python-tutorials-algorithmic-trading/calculate-exponential-moving-average-python/
Merge branch 'master' of https://github.com/BeardyWalrus/tAPIbot