add readme contents

README.md

@@ -1,3 +1,59 @@
 ## parser-go-reflect
 
 Reflection based parser for Go.
+
+We can dynamically walk over reflecting Go `structs` using the [Parser interface](https://github.com/katydid/parser-go):
+
+```go
+import (
+    "reflect"
+    "io"
+
+    reflectparser "github.com/katydid/parser-go-reflect/reflect"
+)
+
+func main() {
+    reflectParser := reflectparser.NewReflectParser()
+    s := &MyStruct{MyField: "myvalue", OtherField: "othervalue"}
+    v := reflect.ValueOf(s)
+    reflectParser.Init(v)
+    myvalue, err := GetMyField("MyField")
+    if err != nil {
+        panic(err)
+    }
+    println(myvalue)
+}
+```
+
+We can then use the parser to decode only `MyField` and skip over other fields and return `"myvalue"`:
+
+```go
+func GetMyField(p parser.Interface) (string, error) {
+	for {
+		if err := p.Next(); err != nil {
+			if err == io.EOF {
+				break
+			} else {
+				return "", err
+			}
+		}
+		fieldName, err := p.String()
+		if err != nil {
+			return "", err
+		}
+		if fieldName != "MyField" {
+			continue
+		}
+		p.Down()
+		if err := p.Next(); err != nil {
+			if err == io.EOF {
+				break
+			} else {
+				return "", err
+			}
+		}
+		return p.String()
+	}
+	return "", nil
+}
+```