Adding travis config

.travis.yml

diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..b00ec9e
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,10 @@
+language: go
+go:
+  - 1.9.x
+  - 1.10.x
+  - tip
+before_install:
+  - go get github.com/mattn/goveralls
+script:
+  - go test -v -coverprofile=coverage.out
+  - goveralls -service=travis-ci -coverprofile=coverage.out