Expose Engulfing strategy to clients of strategies module

strategies/__init__.py

@@ -4,6 +4,7 @@ from .declines import declines
 from .double_5s import double_5s
 from .down_days_in_a_row import down_days_in_a_row
 from .end_of_month import end_of_month
+from .engulfing import engulfing
 from .high_volume_days import high_volume_days
 from .hilo_index_lows import hilo_index_lows
 from .ibs_rsi import ibs_rsi