Add CI script

Signed-off-by: Dejan Mijic <dejan@mainflux.com>

.travis.yml

@@ -0,0 +1,10 @@
+language: go
+
+go:
+  - 1.8
+
+install:
+  - go get github.com/Masterminds/glide
+
+script:
+  - go test $(glide novendor)

README.md

@@ -64,8 +64,8 @@ Thank you for your interest in Mainflux and wish to contribute!
 - [Twitter][twitter]
 
 [banner]: https://github.com/mainflux/doc/blob/master/docs/img/gopherBanner.jpg
-[ci-badge]: https://semaphoreci.com/api/v1/mainflux/mainflux/branches/master/badge.svg
-[ci-url]: https://semaphoreci.com/mainflux/mainflux
+[ci-badge]: https://travis-ci.org/mainflux/mainflux.svg?branch=master
+[ci-url]: https://travis-ci.org/mainflux/mainflux
 [docs]: http://mainflux.readthedocs.io
 [docker]: https://www.docker.com
 [forum]: https://groups.google.com/forum/#!forum/mainflux