Cleaning up script lines - I think the strange looking negative directory tests are intentional and are there for required directories.

Removing superfluous round brackets. #3

Author: Kevin J Walters

.travis.yml

@@ -44,9 +44,9 @@ install:
   - pip install --force-reinstall pylint==1.9.2
 
 script:
-  - ([[ -d "tests" ]] && py.test)
+  - [[ ! -d "tests" ]] || py.test
   - pylint adafruit_midi/*.py
-  - ([[ -d "tests" ]] && pylint --disable=missing-docstring,invalid-name,bad-whitespace,trailing-whitespace,line-too-long,wrong-import-position,unused-import tests/*.py)
-  - ([[ ! -d "examples" ]] || pylint --disable=missing-docstring,invalid-name,bad-whitespace examples/*.py)
+  - [[ ! -d "tests" ]] || pylint --disable=missing-docstring,invalid-name,bad-whitespace,trailing-whitespace,line-too-long,wrong-import-position,unused-import tests/*.py
+  - [[ ! -d "examples" ]] || pylint --disable=missing-docstring,invalid-name,bad-whitespace examples/*.py
   - circuitpython-build-bundles --filename_prefix adafruit-circuitpython-midi --library_location .
-  - cd docs && sphinx-build -E -W -b html . _build/html && cd ..
+  - ( cd docs && sphinx-build -E -W -b html . _build/html )