Make parse mode a config and default to none

README.md

@@ -36,6 +36,7 @@ Lita.configure do |config|
   config.robot.adapter = :slack
   config.robot.admins = ["U012A3BCD"]
   config.adapters.slack.token = "abcd-1234567890-hWYd21AmMH2UHAkx29vb5c1Y"
+  config.adapters.slack.parse = "full" # See https://api.slack.com/docs/formatting#parsing_modes
 end
 ```
 

lib/lita/adapters/slack.rb

@@ -9,6 +9,7 @@ class Slack < Adapter
       # Required configuration attributes.
       config :token, type: String, required: true
       config :proxy, type: String
+      config :parse, type: String
 
       # Provides an object for Slack-specific features.
       def chat_service

lib/lita/adapters/slack/api.rb

@@ -36,7 +36,7 @@ def send_messages(channel_id, messages)
             as_user: true,
             channel: channel_id,
             text: messages.join("\n"),
-            parse: 'full',
+            parse: config.parse,
           )
         end
 

spec/lita/adapters/slack/api_spec.rb

@@ -191,6 +191,7 @@
           as_user: true,
           channel: room,
           text: messages.join("\n"),
+          parse: nil,
         ) do
           [http_status, {}, http_response]
         end