contrib_bots: Restructure bots to follow a consistent structure.

Now all the bots that are stored in contrib_bots are in the
same file/directory format.
The format is specified here #3427. Add tests.py file for encrypt_bot as well.
Fixes #3427.

contrib_bots/bots/commute_bot/commute_bot.py

@@ -6,7 +6,7 @@ from os.path import expanduser
 from six.moves import configparser as cp
 
 home = expanduser('~')
-CONFIG_PATH = home + '/google-commute.ini'
+CONFIG_PATH = home + '/commute_bot.config'
 
 class CommuteHandler(object):
     '''
@@ -89,10 +89,10 @@ class CommuteHandler(object):
 
     # adds API Authentication Key to url request
     def get_api_key(self):
-        # google-commute.ini must have been moved from
-        # ~/zulip/contrib_bots/bots/commute_bot/CommuteBot/google-commute.ini into
-        # /google-commute.ini for program to work
-        # see doc.md for more information
+        # commute_bot.config must have been moved from
+        # ~/zulip/contrib_bots/bots/commute_bot/commute_bot.config into
+        # /commute_bot.config for program to work
+        # see readme.md for more information
         with open(CONFIG_PATH) as settings:
             config = cp.ConfigParser()
             config.readfp(settings)

contrib_bots/bots/commute_bot/readme.md

@@ -11,24 +11,24 @@ units and information in various languages.
 The bot will respond to the same stream input was in. And if called as
 private message, the bot will reply with a private message.
 
-To setup the bot, you will first need to move google-commute.ini into
+To setup the bot, you will first need to move commute_bot.config into
 the user home directory and add an API key.
 
 Move
 
 ```
-~/zulip/contrib_bots/bots/commute_bot/CommuteBot/google-commute.ini
+~/zulip/contrib_bots/bots/commute_bot/commute_bot.config
 ```
 
 into
 
 ```
-~/google-commute.ini
+~/commute_bot.config
 ```
 
 To add an API key, please visit:
 https://developers.google.com/maps/documentation/distance-matrix/start
-to retrieve a key and copy your api key into google-commute.ini
+to retrieve a key and copy your api key into commute_bot.config
 
 Sample input and output: