Fixed MACD Diff

Only changed needed to be true to the spec IMHO.
added comments about webserver
Merge pull request #155 from 5an1ty/patch-1

Fixed MACD Diff
Merge pull request #158 from cykedev/localDB

New trading method: PPO
set EMA as default indicator
updated configuration readme
typo in pair
typo in pair2
fixed verbose profit simulation logging, #162
renamed methods to abbreviations
seperated indicators from trading methods