support unicode escape sequence for json

like: {"name":"\u60a8\u597d"}

src/main/java/com/avaje/ebeaninternal/server/text/json/ReadBasicJsonContext.java

@@ -151,6 +151,15 @@ public class ReadBasicJsonContext implements ReadJsonInterface {
                 case '"':
                 	sb.append('"');
                 	break;
+                case 'u':
+                    String msg = "EOF reading unicode value";
+                    char c1 = src.nextChar(msg);
+                    char c2 = src.nextChar(msg);
+                    char c3 = src.nextChar(msg);
+                    char c4 = src.nextChar(msg);
+                    char u = (char) Integer.parseInt(""+c1+c2+c3+c4, 16);
+                    sb.append(u);
+                    break;
 
                 default:
                     sb.append('\\');

src/test/java/com/avaje/tests/text/json/TestJsonSimple.java

@@ -67,6 +67,10 @@ public class TestJsonSimple extends BaseTestCase {
     JsonElement jsonElement = InternalJsonParser.parse(s);
     Assert.assertNotNull(jsonElement);
 
+    JsonElement e3 = InternalJsonParser.parse("{\"name\":\"\\u60a8\\u597d\"}");
+
+    Assert.assertTrue(e3.evalString("name").length()==2);
+
   }
 
 }