fix unit tests, update example readme

Author: radzhome

examples/README.txt examples/README.rstexamples/README.txt renamed to examples/README.rst

@@ -1,5 +1,12 @@
 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.
+
+To run all tests from bash, type:
+
+    for f in *.py; do python "$f"; done
+    # Or use the below to only see response errors:
+    for f in *.py; do python "$f"; done | grep -i error

tests/test_location_service.py

@@ -10,9 +10,9 @@
 from fedex.services.location_service import FedexSearchLocationRequest
 
 # Common global config object for testing.
-from common import get_test_config
+from common import get_fedex_config
 
-CONFIG_OBJ = get_test_config()
+CONFIG_OBJ = get_fedex_config()
 
 
 @unittest.skipIf(not CONFIG_OBJ.account_number, "No credentials provided.")