Updated #788 to include fresh deployed custom component for travis builds.

.travis.yml

@@ -10,6 +10,8 @@ install:
   - pip3 install homeassistant
   - pip3 install colorlog
   - pip3 install python-dateutil
+  - git clone https://github.com/custom-components/youtube.git youtube_component/
+  - mv youtube_component/custom_components config/custom_components
 
 script:
   - hass -c config/ --script check_config --info all