Fix coverage combine

Bo Peng · Bo Peng · commit 1b382e2a19ba · 2017-10-06T16:14:21.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -55,7 +55,7 @@ script:
       
 after_success:
     - 'if [ $TRAVIS_PYTHON_VERSION == "3.5" ]; then
-           coverage-combine;
+           coverage combine;
            coveralls;
         fi'
 
