VM draft + cli setup (#20)

* updated readme

* added basic cmd.

* added seperate folders for cmd packages.

* Fix netmodes in test + reverse bigint bytes

* glide get deps

cli/main.go

@@ -1,43 +1,21 @@
 package main
 
 import (
-	"flag"
-	"strings"
+	"os"
 
-	"github.com/CityOfZion/neo-go/pkg/network"
+	"github.com/CityOfZion/neo-go/cli/server"
+	"github.com/CityOfZion/neo-go/cli/smartcontract"
+	"github.com/urfave/cli"
 )
 
-var (
-	tcp  = flag.Int("tcp", 3000, "port TCP listener will listen on.")
-	seed = flag.String("seed", "", "initial seed servers.")
-	net  = flag.Int("net", 56753, "the mode the server will operate in.")
-	rpc  = flag.Int("rpc", 0, "let this server also respond to rpc calls on this port")
-)
-
-// Simple dirty and quick bootstrapping for the sake of development.
-// e.g run 2 nodes:
-// neoserver -tcp :4000
-// neoserver -tcp :3000 -seed 127.0.0.1:4000
 func main() {
-	flag.Parse()
+	ctl := cli.NewApp()
+	ctl.Name = "neo-go"
 
-	opts := network.StartOpts{
-		Seeds: parseSeeds(*seed),
-		TCP:   *tcp,
-		RPC:   *rpc,
+	ctl.Commands = []cli.Command{
+		server.NewCommand(),
+		smartcontract.NewCommand(),
 	}
 
-	s := network.NewServer(network.NetMode(*net))
-	s.Start(opts)
-}
-
-func parseSeeds(s string) []string {
-	if len(s) == 0 {
-		return nil
-	}
-	seeds := strings.Split(s, ",")
-	if len(seeds) == 0 {
-		return nil
-	}
-	return seeds
+	ctl.Run(os.Args)
 }