json.texy translated in english (#499)

doc/en/json.texy

@@ -0,0 +1,54 @@
+Working with JSON - Nette\Utils\Json
+************************************
+
+.[perex]
+[Nette\Utils\Json |api:] is a static class with useful functions you can use to work with JSON. It sanitizes errors in different PHP versions and throws exceptions on errors.
+
+The following examples use these aliases:
+
+/--php
+use Nette\Utils\Json;
+use Nette\Utils\JsonException;
+\--
+
+
+encode($value, $options = 0)
+============================
+
+Returns `$value` encoded into JSON. Accepts argument `Json::PRETTY` which formats JSON for better readability.
+
+/--php
+Json::encode($value); // Returns $value encoded in JSON
+Json::encode($value, Json::PRETTY); // Returns formatted $value encoded in JSON
+\--
+
+Method `encode()` throws `JsonException` on error.
+
+/--php
+try {
+	Json::encode($value);
+} catch (JsonException $e) {
+	// Exception handling
+}
+\--
+
+
+decode($json, $options = 0)
+===========================
+
+Converts given JSON either in object or in array. Accepts argument `Json::FORCE_ARRAY` which forces an array instead of an object as the return value.
+
+/--php
+Json::decode('{"variable": true}'); // Returns an object of stdClass with attribute $variable
+Json::decode('{"variable": true}', Json::FORCE_ARRAY); // Returns an array with key "variable" and value true
+\--
+
+Method `decode()` throws `JsonException` on error.
+
+/--php
+try {
+	Json::decode($value);
+} catch (JsonException $e) {
+	// Exception handling
+}
+\--