panic: runtime error: invalid memory address or nil pointer dereference

[ndarilek]

Getting the following when attempting to run this:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x401266]

goroutine 1 [running]:
panic(0x7e6d40, 0xc4200100c0)
    /usr/local/go/src/runtime/panic.go:500 +0x1a1
main.startHTTP()
    /tmp/go/src/github.com/dcu/git-http-server/git-http-server.go:53 +0xe6
main.main()
    /tmp/go/src/github.com/dcu/git-http-server/git-http-server.go:101 +0x5f

Using Go 1.7.1. Please let me know if you have any further questions. Thanks!