Add an oauth example script.

examples/outh/getaccesstoken.py

+import webbrowser
+
+import tweepy
+
+"""
+    Query the user for their consumer key/secret
+    then attempt to fetch a valid access token.
+"""
+
+if __name__ == "__main__":
+
+    consumer_key = raw_input('Consumer key: ').strip()
+    consumer_secret = raw_input('Consumer secret: ').strip()
+    auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
+
+    # Open authorization URL in browser
+    webbrowser.open(auth.get_authorization_url())
+
+    # Ask user for verifier pin
+    pin = raw_input('Verification pin number from twitter.com: ').strip()
+
+    # Get access token
+    token = auth.get_access_token(verifier=pin)
+
+    # Give user the access token
+    print 'Access token:'
+    print '  Key: %s' % token.key
+    print '  Secret: %s' % token.secret
+