Fix travis-CI scripts

Author: sogaani

.travis.yml

@@ -19,6 +19,7 @@ before_install:
   # Setup Node.js version-specific dependencies
   - "test $TRAVIS_NODE_VERSION != '0.8' || npm rm --save-dev istanbul"
   - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 4 || npm rm --save-dev eslint"
+  - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -le 7 || npm install --only=dev https://github.com/sogaani/express.git#initial-support-http2 https://github.com/sogaani/supertest.git#http2"
   # Update Node.js modules
   - "test ! -d node_modules || npm prune"
   - "test ! -d node_modules || npm rebuild"
@@ -28,8 +29,6 @@ script:
   - "test   -z $(npm -ps ls istanbul) || npm run-script test-ci"
   - "test   -z $(npm -ps ls eslint) || npm run-script lint"
   # Run test script with http2
-  - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 8 || npm install https://github.com/sogaani/express.git#initial-support-http2 https://github.com/sogaani/supertest.git#http2"
-  - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 8 || npm test-http2"
-  - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 8 || npm run-script test-http2-ci"
+  - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -le 7 || npm run-script test-http2-ci"
 after_script:
   - "test -e ./coverage/lcov.info && npm install coveralls@2 && cat ./coverage/lcov.info | coveralls"