Anton Kaliaev 3b7a1d7149 check that we have enough arguments ...

Otherwise:

```
panic: runtime error: index out of range

goroutine 1 [running]:
panic(0xbb8de0, 0xc82000e080)
        /usr/local/go/src/runtime/panic.go:464 +0x3e6
main.main()
        /go/src/github.com/tendermint/tendermint/cmd/tendermint/main.go:48 +0x811
```

2017-01-24 21:20:29 +04:00

..

tendermint

check that we have enough arguments

2017-01-24 21:20:29 +04:00