update example doc, update error handling

Author: radzhome

examples/README.txt

@@ -2,4 +2,4 @@ python-fedex Examples
 =====================
 This directory contains a number of examples of how to use python-fedex. For
 these examples to work, you must open example_config.py and enter your
-testing account credentials there.
+testing account credentials there.

examples/country_postal_inquiry.py

@@ -19,7 +19,7 @@
 inquiry.Address.City = 'Clemson'
 inquiry.Address.StateOrProvinceCode = 'SC'
 
-# If you'd like to see some documentation on the ship service WSDL, un-comment
+# If you'd like to see some documentation on the country service WSDL, un-comment
 # this line. (Spammy).
 # print(inquiry.client)
 

examples/create_freight_shipment.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 """
-This example shows how to create shipments. The variables populated below
+This example shows how to create a freight shipment and generate
+a waybill as output. The variables populated below
 represents the minimum required values. You will need to fill all of these, or
 risk seeing a SchemaValidationError exception thrown.
 

examples/create_shipment.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 """
-This example shows how to create shipments. The variables populated below
+This example shows how to create a shipment and generate a waybill as output. The variables populated below
 represents the minimum required values. You will need to fill all of these, or
 risk seeing a SchemaValidationError exception thrown.
 

examples/track_shipment.py

@@ -53,11 +53,19 @@
 print("== Results ==")
 for match in track.response.CompletedTrackDetails[0].TrackDetails:
     print("Tracking #: {}".format(match.TrackingNumber))
-    print("Tracking # UniqueID: {}".format(match.TrackingNumberUniqueIdentifier))
-    print("Status: {}".format(match.StatusDetail.Description))
-    print("Status AncillaryDetails Reason: {}".format(match.StatusDetail.AncillaryDetails[-1].Reason))
-    print("Status AncillaryDetails Description:{}".format(match.StatusDetail.AncillaryDetails[-1].ReasonDescription))
-    print("Commit Message:{}".format(match.ServiceCommitMessage))
+    if hasattr(match, 'TrackingNumberUniqueIdentifier'):
+        print("Tracking # UniqueID: {}".format(match.TrackingNumberUniqueIdentifier))
+    if hasattr(match, 'StatusDetail.Description'):
+        print("Status Description: {}".format(match.StatusDetail.Description))
+    if hasattr(match, 'StatusDetail.AncillaryDetails'):
+        print("Status AncillaryDetails Reason: {}".format(match.StatusDetail.AncillaryDetails[-1].Reason))
+        print("Status AncillaryDetails Description: {}".format(match.StatusDetail.AncillaryDetails[-1].ReasonDescription))
+    if hasattr(match, 'ServiceCommitMessage'):
+        print("Commit Message: {}".format(match.ServiceCommitMessage))
+    if hasattr(match, 'Notification'):
+        print("Notification Severity: {}".format(match.Notification.Severity))
+        print("Notification Code: {}".format(match.Notification.Code))
+        print("Notification Message: {}".format(match.Notification.Message))
     print("")
 
     event_details = []