bug fixes (TCP + uint256) and started core part (#14)

* Fixed TCP read + Uint256 reversed array + started on some core pieces

* Disabled some debug output + muted test

* 0.5.0

pkg/network/payload/headers.go

@@ -0,0 +1,35 @@
+package payload
+
+import (
+	"io"
+
+	"github.com/CityOfZion/neo-go/pkg/core"
+	"github.com/CityOfZion/neo-go/pkg/util"
+)
+
+// Headers payload
+type Headers struct {
+	Hdrs []*core.Header
+}
+
+// DecodeBinary implements the Payload interface.
+func (p *Headers) DecodeBinary(r io.Reader) error {
+	lenHeaders := util.ReadVarUint(r)
+
+	p.Hdrs = make([]*core.Header, lenHeaders)
+
+	for i := 0; i < int(lenHeaders); i++ {
+		header := &core.Header{}
+		if err := header.DecodeBinary(r); err != nil {
+			return err
+		}
+		p.Hdrs[i] = header
+	}
+
+	return nil
+}
+
+// EncodeBinary implements the Payload interface.
+func (h *Headers) EncodeBinary(w io.Writer) error {
+	return nil
+}