fix: update fsnotify ref. repository

.travis.yml

 install:
   - go get github.com/Sirupsen/logrus
   - go get github.com/smartystreets/goconvey
-  - go get github.com/go-fsnotify/fsnotify
+  - go get github.com/fsnotify/fsnotify
 
 go:
   - 1.4

watcher.go

 	"time"
 
 	log "github.com/Sirupsen/logrus"
-	"github.com/go-fsnotify/fsnotify"
+  "github.com/fsnotify/fsnotify"
 )
 
 type watcher struct {