field: add IsEmbedded and fix doc about Value()

field.go

@@ -2,19 +2,25 @@ package structure
 
 import "reflect"
 
-// Field represents a single struct field that encapsulates many high level
-// function around a singel struct field
+// Field represents a single struct field that encapsulates high level
+// functions around the field.
 type Field struct {
 	value reflect.Value
 	field reflect.StructField
 }
 
 // Tag returns the value associated with key in the tag string. If there is no
-// such key in the tag, Tag returns the empty string
+// such key in the tag, Tag returns the empty string.
 func (f *Field) Tag(key string) string {
 	return f.field.Tag.Get(key)
 }
 
+// Value returns the underlying value of of the field.
 func (f *Field) Value() interface{} {
 	return f.value.Interface()
 }
+
+// IsEmbedded returns true if the given field is an anonymous field (embedded)
+func (f *Field) IsEmbedded() bool {
+	return f.field.Anonymous
+}