added get_direct_message example

added a get_direct_message example hope this is helpful. I spent a lot of time trying to figure it out and figured I could help others with the same problem

get_direct_message example

@@ -0,0 +1,17 @@
+from twython import Twython, TwythonError
+twitter = Twython(APP_KEY, APP_SECRET, OAUTH_TOKEN, OAUTH_TOKEN_SECRET)
+
+
+get_list = twitter.get_direct_messages()
+#Returns All Twitter DM information which is a lot in a list format
+
+dm_dict = get_list[0]
+#Sets get_list to a dictionary, the number in the list is the direct message retrieved
+#That means that 0 is the most recent and n-1 is the last DM revieved.
+#You can cycle through all the numbers and it will return the text and the sender id of each
+
+print dm_dict['text']
+#Gets the text from the dictionary
+
+print dm_dict['sender']['id']
+#Gets the ID of the sender