travis ci: update conform latest guidelines

see https://github.com/zendframework/maintainers/blob/master/template/.travis.yml

Author: geerteltink

.travis.yml

@@ -5,20 +5,12 @@ language: php
 cache:
   directories:
     - $HOME/.composer/cache
-    - $HOME/.local
-    - vendor
-    - zf-mkdoc-theme
 
 env:
   global:
     - COMPOSER_ARGS="--no-interaction"
     - COVERAGE_DEPS="satooshi/php-coveralls"
     - LEGACY_DEPS="phpunit/phpunit"
-    - SITE_URL=https://zendframework.github.io/zend-expressive
-    - GH_USER_NAME="Matthew Weier O'Phinney"
-    - [email protected]
-    - GH_REF=github.com/zendframework/zend-expressive.git
-    - secure: "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"
 
 matrix:
   include:
@@ -28,9 +20,8 @@ matrix:
     - php: 5.6
       env:
         - DEPS=locked
+        - CS_CHECK=true
         - TEST_COVERAGE=true
-        - DEPLOY_DOCS="$(if [[ $TRAVIS_BRANCH == 'master' && $TRAVIS_PULL_REQUEST == 'false' ]]; then echo -n 'true' ; else echo -n 'false' ; fi)"
-        - PATH="$HOME/.local/bin:$PATH"
     - php: 5.6
       env:
         - DEPS=latest
@@ -40,7 +31,6 @@ matrix:
     - php: 7
       env:
         - DEPS=locked
-        - CS_CHECK=true
     - php: 7
       env:
         - DEPS=latest
@@ -75,21 +65,15 @@ install:
   - if [[ $DEPS == 'latest' ]]; then travis_retry composer update $COMPOSER_ARGS ; fi
   - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable $COMPOSER_ARGS ; fi
   - if [[ $TEST_COVERAGE == 'true' ]]; then travis_retry composer require --dev $COMPOSER_ARGS $COVERAGE_DEPS ; fi
-  - stty cols 120
-  - export COLUMNS=120
-  - composer show
+  - stty cols 120 && composer show
 
 script:
   - if [[ $TEST_COVERAGE == 'true' ]]; then composer test-coverage ; else composer test ; fi
   - if [[ $CS_CHECK == 'true' ]]; then composer cs-check ; fi
   - if [[ $CS_CHECK == 'true' ]]; then composer license-check ; fi
-  - if [[ $DEPLOY_DOCS == "true" && "$TRAVIS_TEST_RESULT" == "0" ]]; then wget -O theme-installer.sh "https://raw.githubusercontent.com/zendframework/zf-mkdoc-theme/master/theme-installer.sh" ; chmod 755 theme-installer.sh ; ./theme-installer.sh ; fi
 
 after_script:
   - if [[ $TEST_COVERAGE == 'true' ]]; then composer upload-coverage ; fi
 
-after_success:
-  - if [[ $DEPLOY_DOCS == "true" ]]; then echo "Preparing to build and deploy documentation" ; ./zf-mkdoc-theme/deploy.sh ; echo "Completed deploying documentation" ; fi
-
 notifications:
   email: false