kompose: Bug: Adding `networks:` to docker-compose.yaml file results in a runtime error

kompose version 0.3.0 (135165b3) go version go1.8 darwin/amd64

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x21eda6c]

goroutine 1 [running]:
github.com/kubernetes-incubator/kompose/vendor/github.com/docker/libcompose/project.(*Project).handleNetworkConfig(0xc42031c0e0)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/vendor/github.com/docker/libcompose/project/project.go:281 +0x19c
github.com/kubernetes-incubator/kompose/vendor/github.com/docker/libcompose/project.(*Project).load(0xc42031c0e0, 0x7fff5fbff5bb, 0x1a, 0xc42041c400, 0x69a, 0x89a, 0xc4200aa990, 0xc4204c9410)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/vendor/github.com/docker/libcompose/project/project.go:234 +0x490
github.com/kubernetes-incubator/kompose/vendor/github.com/docker/libcompose/project.(*Project).Parse(0xc42031c0e0, 0x0, 0x0)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/vendor/github.com/docker/libcompose/project/project.go:112 +0x162
github.com/kubernetes-incubator/kompose/pkg/loader/compose.(*Compose).LoadFile(0x365d9b0, 0xc420293480, 0x1, 0x1, 0xc4200aa8d0, 0x0, 0x10)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/pkg/loader/compose/compose.go:304 +0x10f
github.com/kubernetes-incubator/kompose/pkg/app.Convert(0x100000100, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0xc420293480, 0x1, 0x1, ...)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/pkg/app/app.go:214 +0x145
github.com/kubernetes-incubator/kompose/cmd.glob..func3(0x362fb00, 0xc420284fc0, 0x0, 0x2)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/cmd/convert.go:85 +0x4f
github.com/kubernetes-incubator/kompose/vendor/github.com/spf13/cobra.(*Command).execute(0x362fb00, 0xc420284e20, 0x2, 0x2, 0x362fb00, 0xc420284e20)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/vendor/github.com/spf13/cobra/command.go:650 +0x231
github.com/kubernetes-incubator/kompose/vendor/github.com/spf13/cobra.(*Command).ExecuteC(0x362ff40, 0xc42006e058, 0x0, 0xc4204c9f48)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/vendor/github.com/spf13/cobra/command.go:737 +0x339
github.com/kubernetes-incubator/kompose/vendor/github.com/spf13/cobra.(*Command).Execute(0x362ff40, 0x1, 0x1)
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/vendor/github.com/spf13/cobra/command.go:695 +0x2b
github.com/kubernetes-incubator/kompose/cmd.Execute()
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/cmd/root.go:92 +0x31
main.main()
	/home/tomas/dev/go/src/github.com/kubernetes-incubator/kompose/main.go:22 +0x20