Merge pull request #1827 from browserify/fix-cert

ci: Disable certificate check for very old npm

.travis.yml

@@ -10,6 +10,8 @@ node_js:
   - "0.8"
   - "0.6"
 before_install:
+  # Old npm certs are untrusted https://github.com/npm/npm/issues/20191
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ] || [ "${TRAVIS_NODE_VERSION}" = "0.8" ]; then export NPM_CONFIG_STRICT_SSL=false; fi'
   - 'nvm install-latest-npm'
 install:
   - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ] || [ "${TRAVIS_NODE_VERSION}" = "0.9" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'