Enable travis build

.travis.yml

@@ -0,0 +1,11 @@
+language: c
+compiler:
+    - gcc
+script: make 
+notifications:
+    webhooks:
+        urls:
+            - https://webhooks.gitter.im/e/ec51097009f538278ab8
+        on_success: change
+        on_failure: always
+