Implement Logger (#228)

* Added new base logger

* updated example and test configs

* updated exchange helpers restful router & server

* logPath is now passed to the logger to remove dependency on common package

* updated everything besides exchanges to use new logger

* alphapoint to bitmex done

* updated bitmex bitstamp bittrex btcc and also performance changes to logger

* btcmarkets coinbase coinut exmo gateio wrappers updated

* gateio and gemini logger updated

* hitbtc huobi itbit & kraken updated

* All exchanges updatd

* return correct error for disabled websocket

* don't disconnect client on invalid json

* updated router internal logging

* log.Fatal to t.Error for tests

* Changed from fatal to error failure to set maxprocs

* output ANSI codes for everything but windows for now due to lack of windows support

* added error handling to logger and unit tests

* clear wording on print -> log.print

* added benchmark test

* cleaned up import sections

* Updated logger based on PR requests (added default config options on failure/setting errors)

* ah this should fix travici enc config issue

* Load entire config and clear out logging to hopefully fix travisci issue

* wording & test error handling

* fixed formatting issues based on feedback

* fixed formatting issues based on feedback

* changed CheckDir to use mkdirall instead of mkdir and other changes based on feedback

currency/forexprovider/base/base_interface.go

@@ -2,7 +2,8 @@ package base
 
 import (
 	"errors"
-	"log"
+
+	log "github.com/thrasher-/gocryptotrader/logger"
 )
 
 // IFXProviders contains an array of foreign exchange interfaces
@@ -24,12 +25,12 @@ func (fxp IFXProviders) GetCurrencyData(baseCurrency, symbols string) (map[strin
 		if fxp[x].IsPrimaryProvider() && fxp[x].IsEnabled() {
 			rates, err := fxp[x].GetRates(baseCurrency, symbols)
 			if err != nil {
-				log.Println(err)
+				log.Error(err)
 				for y := range fxp {
 					if !fxp[y].IsPrimaryProvider() && fxp[x].IsEnabled() {
 						rates, err = fxp[y].GetRates(baseCurrency, symbols)
 						if err != nil {
-							log.Println(err)
+							log.Error(err)
 							continue
 						}
 						return rates, nil