Add sync after mv (#23)

* ignore intellij project folder

* fix comment spelling

* add sync after mv

.gitignore

@@ -1,3 +1,4 @@
 tmp
 myapp*
 example/docker
+.idea

sys_posix.go

@@ -26,9 +26,18 @@ func move(dst, src string) error {
 		return nil
 	}
 	//HACK: we're shelling out to mv because linux
-	//throws errors when crossing device boundaryes.
+	//throws errors when crossing device boundaries.
 	//TODO see sys_posix_mv.go
-	return exec.Command("mv", src, dst).Run()
+	if err := exec.Command("mv", src, dst).Run(); err != nil {
+		return err
+	}
+
+	// Run sync to 'commit' the mv by clearing caches
+	return sync().Run()
+}
+
+func sync() *exec.Cmd {
+	return exec.Command("sync")
 }
 
 func chmod(f *os.File, perms os.FileMode) error {