Move pytest-travis-fold to the right place.

.gitignore

@@ -4,6 +4,7 @@
 /.cache
 /.coverage
 /.eggs
+/.tox
 /AUTHORS
 /ChangeLog
 /Comics

.travis.yml

@@ -12,7 +12,7 @@ addons:
       - libjpeg-dev
 # command to install dependencies
 install:
-  - pip install pytest-travis-fold tox-travis coveralls
+  - pip install tox-travis coveralls
 # command to run tests
 script: tox
 after_success:

tox.ini

@@ -12,5 +12,6 @@ commands = py.test --cov=dosage --cov=dosagelib --tb=short -n10
 deps =
     pytest-xdist
     pytest-cov
+    pytest-travis-fold
     cssselect
     Pillow