Rearrange code so go get can be used

 - remove example main file
 - add README.md file

Author: thani-sh

README.md

@@ -0,0 +1,22 @@
+# Go DDP Server
+
+
+## Example
+
+```go
+package main
+
+import (
+  "github.com/meteorhacks/goddp/server"
+)
+
+func main() {
+  server := server.New()
+  server.Method("hello", methodHandler)
+  server.Listen(":1337")
+}
+
+func methodHandler(p []interface{}) (interface{}, error) {
+  return "result", nil
+}
+```

client/client.go

@@ -0,0 +1 @@
+package client

main.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/websocket"
+	"github.com/meteorhacks/goddp/utils/random"
 )
 
 type Server struct {
@@ -70,7 +71,7 @@ func (s *Server) handler(w http.ResponseWriter, r *http.Request) {
 func (s *Server) handleConnect(c *websocket.Conn, m *Message) {
 	err := c.WriteJSON(map[string]string{
 		"msg":     "connected",
-		"session": randomId(17),
+		"session": random.Id(17),
 	})
 
 	if err != nil {

server/server.go

@@ -2,7 +2,7 @@ package server
 
 type MethodHandler func([]interface{}) (interface{}, error)
 
-// This has the all the possible messgae a DDP message can have
+// This has the all the possible fields a DDP message can have
 type Message struct {
 	Msg     string        `json:"msg"`
 	Session string        `json:"session"`

server/types.go

@@ -0,0 +1,18 @@
+package random
+
+import (
+	"math/rand"
+)
+
+var dict = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+func Id(n int) string {
+	a := make([]rune, n)
+	l := len(dict)
+
+	for i := range a {
+		a[i] = dict[rand.Intn(l)]
+	}
+
+	return string(a)
+}