Update .travis.yml

Author: Beakerboy

.travis.yml

@@ -1,10 +1,10 @@
 language: vba
 install:
   - composer install
+  - sudo apt-get install -qq mono-complete
 script:
   - vendor/bin/phpcs --extensions=cls/vba,bas/vba --standard=vendor/beakerboy/vba_tokenizer/src/Standards/VBA $TRAVIS_BUILD_DIR/src
 after_success:
-  - sudo apt-get install -qq mono-complete
   - wget https://www.naturaldocs.org/download/natural_docs/2.0.2/Natural_Docs_2.0.2.zip -O /tmp/ND.zip
   - unzip /tmp/ND.zip -d /tmp
   - mkdir $TRAVIS_BUILD_DIR/docs