Change default value and add docstring

freqtrade/data/converter.py

@@ -11,12 +11,13 @@ logger = logging.getLogger(__name__)
 
 
 def parse_ticker_dataframe(ticker: list, ticker_interval: str,
-                           fill_missing: bool = False) -> DataFrame:
+                           fill_missing: bool = True) -> DataFrame:
     """
     Converts a ticker-list (format ccxt.fetch_ohlcv) to a Dataframe
     :param ticker: ticker list, as returned by exchange.async_get_candle_history
     :param ticker_interval: ticker_interval (e.g. 5m). Used to fill up eventual missing data
-    :param fill_missing: boolean
+    :param fill_missing: fill up missing candles with 0 candles
+                         (see ohlcv_fill_up_missing_data for details)
     :return: DataFrame
     """
     logger.debug("Parsing tickerlist to dataframe")