adds success

Author: Nowosad

.travis.yml

@@ -19,8 +19,8 @@ install:
   - R -e "install.packages('spDataLarge', repos = 'https://nowosad.github.io/drat/', type = 'source')"
   - R -e "devtools::install_github('geocompr/geocompkg')"
 
-#script:
-#  - make html
+script:
+  - make clean
 
 #after_success:
 #  - test $TRAVIS_PULL_REQUEST == "false" && test $TRAVIS_BRANCH == "master" && bash deploy.sh