Update packages

github.com/tidwall/gjson/README.md

@@ -10,7 +10,7 @@
 <p align="center">get a json value quickly</a></p>
 
 GJSON is a Go package that provides a [fast](#performance) and [simple](#get-a-value) way to get values from a json document.
-It has features such as [one line retrieval](#get-a-value), [dot notation paths](#path-syntax), [iteration](#iterate-through-an-object-or-array), and [map unmarshalling](#unmarshal-to-a-map).
+It has features such as [one line retrieval](#get-a-value), [dot notation paths](#path-syntax), [iteration](#iterate-through-an-object-or-array).
 
 Getting Started
 ===============
@@ -26,7 +26,7 @@ $ go get -u github.com/tidwall/gjson
 This will retrieve the library.
 
 ## Get a value
-Get searches json for the specified path. A path is in dot syntax, such as "name.last" or "age". This function expects that the json is well-formed and validates. Invalid json will not panic, but it may return back unexpected results. When the value is found it's returned immediately. 
+Get searches json for the specified path. A path is in dot syntax, such as "name.last" or "age". This function expects that the json is well-formed. Bad json will not panic, but it may return back unexpected results. When the value is found it's returned immediately. 
 
 ```go
 package main
@@ -233,6 +233,53 @@ if gjson.Get(json, "name.last").Exists(){
 }
 ```
 
+## Unmarshalling
+
+There's a `gjson.Unmarshal` function which loads json data into a value.
+It's a general replacement for `json.Unmarshal` and you can typically
+see a 2-3x boost in performance without the need for external generators.
+
+This function works almost identically to `json.Unmarshal` except that 
+`gjson.Unmarshal` will automatically attempt to convert JSON values to any
+Go type. For example, the JSON string "100" or the JSON number 100 can be
+equally assigned to Go string, int, byte, uint64, etc. This rule applies to
+all types.
+
+
+```go
+package main
+
+import (
+	"fmt"
+
+	"github.com/tidwall/gjson"
+)
+
+type Animal struct {
+	Type  string `json:"type"`
+	Sound string `json:"sound"`
+	Age   int    `json:"age"`
+}
+
+var json = `{
+	"type": "Dog",
+	"Sound": "Bark",
+	"Age": "11"
+}`
+
+func main() {
+	var dog Animal
+	gjson.Unmarshal([]byte(json), &dog)
+	fmt.Printf("type: %s, sound: %s, age: %d\n", dog.Type, dog.Sound, dog.Age)
+}
+```
+
+This will print:
+
+```
+type: Dog, sound: Bark, age: 11
+```
+
 ## Unmarshal to a map
 
 To unmarshal to a `map[string]interface{}`: