Fixed UTF8 chars

following this pull issue fix:
PubToolBox#63

UTF8 characters - Latin Diacritics are not rendering properly  PubToolBox#63

Author: Chaiavi

src/main/java/com/afrozaar/wordpress/wpapi/v2/Client.java

@@ -45,6 +45,7 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 import java.util.function.BiConsumer;
 import java.util.function.BiFunction;
@@ -127,6 +128,7 @@ public Client(String context, String baseUrl, String username, String password,
         messageConverters.add(new MappingJackson2HttpMessageConverter(emptyArrayAsNullObjectMapper));
         //messageConverters.add(new MappingJackson2HttpMessageConverter());
         restTemplate = new RestTemplate(messageConverters);
+        restTemplate.getMessageConverters().add(0, new StringHttpMessageConverter(StandardCharsets.UTF_8));
 
         if (requestFactory != null) {
             restTemplate.setRequestFactory(requestFactory);