Merge pull request #4 from ipfs/feat/CI

Add Makefile and travis

.travis.yml

+language: go
+sudo: false
+
+go:
+  - 1.6.2
+  - release
+  - tip
+
+script:
+  - make test
+
+env: TEST_NO_FUSE=1 TEST_VERBOSE=1

Makefile

+test: deps
+	go test -race -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 ./...
+