Change PickingResults to inherit from dict and add dot access methods

pylot/core/pick/autopick.py

@@ -164,7 +164,7 @@ class PickingParameters(object):
         for key, value in d.items():
             setattr(self, key, value)
 
-class PickingResults(object):
+class PickingResults(dict):
 
     def __init__(self):
         # initialize output
@@ -192,6 +192,12 @@ class PickingResults(object):
         self.Ao = None  # Wood-Anderson peak-to-peak amplitude
         self.picker = 'auto'  # type of picks
 
+    def __setattr__(self, key, value):
+        self[key] = value
+
+    def __getattr__(self, key):
+        return self[key]
+
 class MissingTraceException(ValueError):
     """
     Used to indicate missing traces in a obspy.core.stream.Stream object