add session test & delete readme

 ## beego
-=======
 beego is a Go Framework which is inspired from tornado and sinatra. 
 
 It is a simply & powerful web framework.

+package session
+
+import (
+	"testing"
+)
+
+func Test_gob(t *testing.T) {
+	a := make(map[interface{}]interface{})
+	a["username"] = "astaxie"
+	a[12] = 234
+	b, err := encodeGob(a)
+	if err != nil {
+		t.Error(err)
+	}
+	c, err := decodeGob(b)
+	if err != nil {
+		t.Error(err)
+	}
+	if len(c) == 0 {
+		t.Error("decodeGob empty")
+	}
+	if c["username"] != "astaxie" {
+		t.Error("decode string error")
+	}
+	if c[12] != 234 {
+		t.Error("decode int error")
+	}
+}