Don't short-circuit spec tests

Author: rubensworks

.travis.yml

@@ -9,7 +9,10 @@ env:
 script:
   - npm run lint
   - npm test
-  - npm run spec
+  - npm run spec-turtle
+  - npm run spec-ntriples
+  - npm run spec-nquads
+  - npm run spec-trig
   - npm run docs
 after_success:
   - if [ "$TRAVIS_NODE_VERSION" == "$DEFAULT_NODE_VERSION" ]; then