added .travis

.travis.yml

@@ -0,0 +1,13 @@
+language: rust
+sudo: false
+matrix:
+  include:
+    - rust: 1.32.0
+    - rust: stable
+branches:
+  only:
+    - master
+script:
+  - |
+    cargo build --verbose &&
+    cargo test --verbose