fixup travis syntax for deploy stage

.travis.yml

@@ -57,7 +57,7 @@ script:
  - CTEST_OUTPUT_ON_FAILURE=1 make test
  - make coveralls
  - cd ..
-after_success:
+install:
   # run CODES integration testing for master branch only
   - if: branch=master
   - cd ..
@@ -69,31 +69,26 @@ after_success:
   - make
   - make tests
   - make check
-deploy:
+after_success:
   - bash <(curl -s https://codecov.io/bash)
   - ## the following automatically builds the doxygen
   - ## documentation and pushes it to the gh_pages branch
   - ## Shamelessly stolen from http://bit.ly/1H1sawW
-  -
-  - # First, set up credentials using the environment variables
-  - # GIT_NAME, GIT_EMAIL and GH_TOKEN. These were passed
-  - # encrypted to travis and should have been decrypted
-  - # using travis' private key before this script was run.
-  - git config --global user.name "ROSS bot"
-  - git config --global user.email [email protected]
-  -
-  - # clone the whole repo again, but switch to gh_pages branch
-  - git clone -b master --single-branch https://github.com/ross-org/ross-org.github.io
-  - cd ross-org.github.io
-  - git clone -b master --single-branch https://github.com/ross-org/ROSS
-  - cd ROSS
-  - mkdir build && cd build
+before_deploy:
+  - mkdir docs-build && cd docs-build
   - cmake -DROSS_BUILD_DOXYGEN=ON -DDOXYGEN_CALLER_GRAPHS=ON -DDOXYGEN_CALL_GRAPHS=ON ..
   - make apidoc
-  - cd ../..
-  - git rm -r ROSS-docs
-  - mkdir -p ROSS-docs/docs
-  - mv ROSS/build/docs/html ROSS-docs/docs
-  - git add ROSS-docs
-  - git commit -m "Automatic doxygen build."
-  - git push https://${GH_TOKEN}@github.com/ROSS-org/ross-org.github.io master
+deploy:
+  provider: pages
+  skip_cleanup: true
+  github_token: $GH_TOKEN
+  keep_history: true
+  repo: ross-org/ross-org.github.io
+  target_branch: master
+  name: "ROSS bot"
+  email: [email protected]
+  on:
+    branch: master
+  script:
+    - rm -r ROSS-docs/docs
+    - mv ROSS/build-docs/docs/html ROSS-docs/docs