Update .travis.yml

Author: dlfivefifty

.travis.yml

@@ -17,7 +17,7 @@ notifications:
 after_script:
   - bash ./docs/travis.sh
 after_success:
-  - julia -e 'cd(Pkg.dir("ApproxFunFourier")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
+  - julia -e 'cd(Pkg.dir("ApproxFunFourier")); Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'
 
 
 # uncomment the following lines to override the default test script