Travis wait

.travis.yml

@@ -64,7 +64,7 @@ install:
     - pip install coveralls
     - pip install codecov
 script:
-    - travis-wait 40 tox -r -e $TOX_ENV
+    - travis_wait 40 tox -r -e $TOX_ENV
 after_script:
     - |
       case "$TRAVIS_EVENT_TYPE" in