Add .travis.yml

Author: Steven Ayers

.travis.yml

@@ -0,0 +1,15 @@
+language: go
+
+go:
+  - 1.11.x
+  - master
+
+services:
+  - docker
+
+before_install:
+  - docker run -d -p 5080:5080 -p 6080:6080 -p 9080:9080 --name dgraph dgraph/dgraph dgraph zero
+  - docker exec -d dgraph dgraph alpha --lru_mb 4096 --zero localhost:5080
+
+
+script: go test -v ./...