Add travis ci

Author: dvic

.travis.yml

@@ -0,0 +1,18 @@
+language: go
+
+go:
+  - 1.8.x
+  - 1.9.x
+  - 1.10.x
+  - tip
+
+matrix:
+  allow_failures:
+    - go: tip
+  fast_finish: true
+
+before_install:
+  - go get -t -d -v ./... && go build -v ./...
+
+script:
+  - go test -v -race ./...

README.md

@@ -1,7 +1,7 @@
 # graphql-go
 
 [![Sourcegraph](https://sourcegraph.com/github.com/qdentity/graphql-go/-/badge.svg)](https://sourcegraph.com/github.com/qdentity/graphql-go?badge)
-[![Build Status](https://semaphoreci.com/api/v1/graph-gophers/graphql-go/branches/master/badge.svg)](https://semaphoreci.com/graph-gophers/graphql-go)
+[![Build Status](https://travis-ci.org/qdentity/graphql-go.svg?branch=master)](https://travis-ci.org/qdentity/graphql-go)
 [![GoDoc](https://godoc.org/github.com/qdentity/graphql-go?status.svg)](https://godoc.org/github.com/qdentity/graphql-go)
 
 ## Status