fuse: add support for Travis-CI

.travis.yml

+sudo: required
+
+language: go
+go_import_path: github.com/hanwen/go-fuse
+
+go:
+  - 1.9.x
+  - 1.10.x
+  - 1.11.x
+  - master
+
+matrix:
+ fast_finish: true
+ allow_failures:
+   - go: master
+
+before_install:
+  - sudo apt-get install -qq pkg-config fuse
+  - sudo modprobe fuse
+  - sudo chmod 666 /dev/fuse
+  - sudo chown root:$USER /etc/fuse.conf
+
+install:
+  - go get -t -race ./...
+
+script:
+  - go test -v -race ./...

README.md

 # GO-FUSE
 
+[![Build Status](https://travis-ci.org/hanwen/go-fuse.svg?branch=master)](https://travis-ci.org/hanwen/go-fuse)
+[![GoDoc](https://godoc.org/github.com/hanwen/go-fuse?status.svg)](https://godoc.org/github.com/hanwen/go-fuse)
+
 native bindings for the FUSE kernel module.
 
 ## Highlights