Updates travis commands for better PRs

This should fix the failed Travis builds when checking Pull Requests.

It should end up skipping the integration tests, but the unit tests
should still run.

Author: mfulgo

.travis.yml

@@ -9,5 +9,7 @@ script:
 after_success:
 - npm run coveralls
 before_install:
-- openssl aes-256-cbc -K $encrypted_d4f181ef7c79_key -iv $encrypted_d4f181ef7c79_iv
-  -in auth.js.enc -out test/resources/auth.js -d
+- '[ "${TRAVIS_PULL_REQUEST}" = "false" ] && openssl aes-256-cbc
+     -K $encrypted_d4f181ef7c79_key -iv $encrypted_d4f181ef7c79_iv
+     -in auth.js.enc -out test/resources/auth.js -d
+   || true'