Update .travis.yml

Author: kartiksibal

.travis.yml

@@ -7,9 +7,9 @@ install:
 
 before_script:
   - pycodestyle --exclude=migrations,settings.py,lib,tests --max-line-length=100 .
+  - cd app/
 
 script:
-  - cd app/
   - python3.6 -m pytest -v tests/
 
 notifications: