restore travis and add --no-default-features

Author: Geobert Quach

disable.travis.yml renamed to .travis.yml

@@ -47,10 +47,10 @@ script:
   - rustc -Vv
   - cargo -V
   - cargo build --verbose
-  - cp target/debug/cobalt target/ # for cli tests
   - cargo test  --verbose
+  - cargo build --no-default-features --verbose
+  - cargo test --no-default-features --verbose
   - cargo build --verbose --features "sass"
-  - cp target/debug/cobalt target/ # for cli tests
   - cargo test  --verbose --features "sass"
 
 before_deploy: