Update .travis.yml

Author: t4n6a1ka

.travis.yml

@@ -1,48 +1 @@
-sudo: false # route your build to the container-based infrastructure for a faster build
 
-language: ruby
-
-before_install:
-  - gem install bundler -v '< 2'
-     
-cache:
-  # Cache Ruby bundles
-  - bundler
-  - directories:
-    - $TRAVIS_BUILD_DIR/tmp/.htmlproofer #https://github.com/gjtorikian/html-proofer/issues/381
-    - /usr/local/lib/python3.3/dist-packages/pip/
-
-# Assume bundler is being used, therefore
-# the `install` step will run `bundle install` by default.
-script: "bash -ex .travis-ci.sh"
-
-env:
-  global:
-  - NOKOGIRI_USE_SYSTEM_LIBRARIES=true # speeds up installation of html-proofer
-
-matrix:
-  fast_finish: true
-  include:
-    - rvm: 2.2.5
-      env: TASK='htmlproofer'
-    - rvm: 2.2.5
-      env: TASK='htmlproofer-external'
-    - rvm: 2.2.5
-      env: TASK='eip-validator'
-    - python: 3.3
-      env: TASK='codespell'
-      before_script: "sudo pip install urllib3[secure] && sudo pip install codespell"
-  allow_failures:
-    - rvm: 2.2.5
-      env: TASK='htmlproofer-external'
-
-notifications:
-  webhooks:
-    urls:
-      - https://ethlab-183014.appspot.com/merge/
-    on_success: always
-
-addons:
-  apt:
-    packages:
-      "libcurl4-openssl-dev" # https://github.com/gjtorikian/html-proofer/issues/376#issuecomment-332767999