chore(travis): removed zuul tests, simplified

.travis.yml

@@ -1,29 +1,18 @@
 language: node_js
 node_js:
-- '0.12'
+- 4
 sudo: false
 cache:
   directories:
   - node_modules
 notifications:
   email: false
-before_install:
-- nvm install $NODE
-- nvm use $NODE
-- npm i -g npm@^2.0.0
 before_script:
 - npm prune
-- curl -Lo travis_after_all.py https://git.io/vLSON
-script: npm run $COMMAND
 after_success:
-- python travis_after_all.py
-- export $(cat .to_export_back)
-- if [[ $COMMAND = test:coverage ]]; then npm run test:coverage:upload; fi
-- npm run build && npm run docs && npm run semantic-release && npm run deploydocs
-env:
-  matrix:
-  - NODE=0.10 COMMAND=test:browser:cloud
-  - NODE=0.10 COMMAND=test:coverage
-  - NODE=0.10 COMMAND=test
-  - NODE=0.12 COMMAND=test
-  - NODE=iojs-v1 COMMAND=test
+- npm run test:coverage && npm run test:coverage:upload
+- if [[ $TRAVIS_BRANCH == 'master' && $TRAVIS_PULL_REQUEST == 'false' ]]; then npm run docs && npm run deploydocs; fi
+- npm run semantic-release
+branches:
+  except:
+    - /^v\d+\.\d+\.\d+$/