Merge pull request #85 from johnnytung/develop

修正WxMpXmlMessage中，设备id的XStreamAlias为DeviceID

Author: binarywang

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/bean/message/WxMpXmlMessage.java

@@ -277,7 +277,7 @@ public class WxMpXmlMessage implements Serializable {
   /**
    * 设备ID，第三方提供
    */
-  @XStreamAlias("DeviceId")
+  @XStreamAlias("DeviceID")
   @XStreamConverter(value = XStreamCDataConverter.class)
   private String deviceId;