Merge pull request #780 from YunoHost/apps.json

Update change_level.py and travis.yml

.travis.yml

@@ -4,4 +4,5 @@ python:
 script:
   - python -m json.tool official.json
   - python -m json.tool community.json
+  - python -m json.tool apps.json
   - for i in ./locales/*.json; do python -m json.tool $i || return 1; done

change_level.py

@@ -7,7 +7,7 @@ import json
 
 if __name__ == '__main__':
     if len(sys.argv[1:]) < 3:
-        print "Usage: ./change_level.py <official.json|community.json> <app_id> <level>"
+        print "Usage: ./change_level.py <apps.json> <app_id> <level>"
         sys.exit(1)
 
     app_list_name, app_id, level = sys.argv[1:4]