add travis.yml

.travis.yml

+os:
+    - linux
+    - osx
+
+language: go
+
+go:
+    - 1.7
+
+install: true
+
+script:
+    - make deps
+    - gx-go rewrite
+    - go get github.com/mattn/goveralls
+    - goveralls -service=travis-ci
+
+cache:
+    directories:
+        - $GOPATH/src/gx

Makefile

+test: deps
+	go test -v
+
+export IPFS_API ?= v04x.ipfs.io
+
+gx:
+	go get -u github.com/whyrusleeping/gx
+	go get -u github.com/whyrusleeping/gx-go
+
+deps: gx
+	gx --verbose install --global
+	gx-go rewrite
+	go get -t ./...
+