add node and token namespaces

token/token.go

@@ -0,0 +1,15 @@
+package token
+
+type Token struct {
+	Value     string
+	StartLine int
+	EndLine   int
+}
+
+func NewToken(value []byte, startLine int, endLine int) Token {
+	return Token{string(value), startLine, endLine}
+}
+
+func (t Token) String() string {
+	return string(t.Value)
+}