trying to fix coverage report

Author: pancetta

.travis.yml

@@ -26,7 +26,7 @@ install:
 script:
   - "./docs/update_apidocs.sh"
   - which nosetests
-  - nosetests --with-coverage --cover-erase --cover-inclusive --cover-package=pySDC/core,pySDC/implementations,pySDC/helpers,pySDC/tutorial --cover-html --cover-html-dir=target/doc/build/test_coverage pySDC/tests
+  - nosetests --with-coverage --cover-erase --cover-inclusive --cover-package=pySDC/core,pySDC/implementations,pySDC/helpers,pySDC/tutorial --cover-html --cover-html-dir=doc/build/test_coverage pySDC/tests
   - if [[ $PYTHON_VERSION == 3 ]]; then travis-sphinx build; fi
 
 after_success: