Run cargo test on CI

There is currently one unit test which wasn't executed on CI before.
This makes it so that all the normal tests will get executed as well.

Author: phansch

.travis.yml

@@ -12,7 +12,9 @@ matrix:
    - rust: nightly
      env: FEATURES=""
 
-script: cd test-project && cargo test $FEATURES
+script:
+  - cargo test $FEATURES
+  - cd test-project && cargo test $FEATURES
 
 notifications:
   email: