Closes #337 - Finally got it working.. I'm sure of it.

config/script/tweet.yaml

@@ -19,7 +19,7 @@ tweet_engine:
           {{ tweet }} #IOT #SmartHome
         data:
           media: >-
-            {{ image }}
+            {{image}}
 
     # - service: ifttt.trigger
     #   data_template: {"event":"facebook_tweet", "value1":"{{ tweet }}", "value2":"{{ value2 }}", "value3":"{{ value3 }}"}