diff --git a/vendor/github.com/cevaris/ordered_map/node.go b/vendor/github.com/cevaris/ordered_map/node.go
new file mode 100644
index 0000000..ad0d142
--- /dev/null
+++ b/vendor/github.com/cevaris/ordered_map/node.go
@@ -0,0 +1,62 @@
+package ordered_map
+
+import (
+	"fmt"
+	"bytes"
+)
+
+type node struct {
+	Prev  *node
+	Next  *node
+	Value interface{}
+}
+
+func newRootNode() *node {
+	root := &node{}
+	root.Prev = root
+	root.Next = root
+	return root
+}
+
+func newNode(prev *node, next *node, key interface{}) *node {
+	return &node{Prev: prev, Next: next, Value: key}
+}
+
+func (n *node) Add(value string) {
+	root := n
+	last := root.Prev
+	last.Next = newNode(last, n, value)
+	root.Prev = last.Next
+}
+
+func (n *node) String() string {
+	var buffer bytes.Buffer
+	if n.Value == "" {
+		// Need to sentinel
+		var curr *node
+		root := n
+		curr = root.Next
+		for curr != root {
+			buffer.WriteString(fmt.Sprintf("%s, ", curr.Value))
+			curr = curr.Next
+		}
+	} else {
+		// Else, print pointer value
+		buffer.WriteString(fmt.Sprintf("%p, ", &n))
+	}
+	return fmt.Sprintf("LinkList[%v]", buffer.String())
+}
+
+func (n *node) IterFunc() func() (string, bool) {
+	var curr *node
+	root := n
+	curr = root.Next
+	return func() (string, bool) {
+		for curr != root {
+			tmp := curr.Value.(string)
+			curr = curr.Next
+			return tmp, true
+		}
+		return "", false
+	}
+}