add coin recharge sms notice

Helius

2020-07-07 71006e38797a533a59ea3e5180157e70ede50795

 src/main/java/com/xcong/excoin/configurations/properties/SecurityProperties.java

@@ -14,4 +14,6 @@
public class SecurityProperties {

    private String privateKey;

    private String publicKey;
}