Update codecov

Author: wooorm

.travis.yml

@@ -7,7 +7,8 @@ node_js:
 - '5.0'
 - iojs
 sudo: false
-after_script: npm install codecov.io && cat ./coverage/lcov.info | codecov
+after_success:
+- bash <(curl -s https://codecov.io/bash)
 deploy:
   - provider: npm
     email: [email protected]