Now Point.Builder.addFieldsFromPOJO adds Column fields from super classes (influxdata#617)

* Now add POJO adds Column fields from inherited classes

* Added white space after while loop declaration

* Added white space before loop

* prefixed all added '{' with whitespaces

* Update CHANGELOG.md

Author: MelulekiDube

CHANGELOG.md

@@ -31,6 +31,8 @@ OkHttpClient client = new OkHttpClient.Builder()
   [Issue #367](https://github.com/influxdata/influxdb-java/issues/367)
 - BatchOptions to have .precision()
   [Issue #532](https://github.com/influxdata/influxdb-java/issues/532)
+- Point.Builder.addFieldsFromPOJO to add Column fields from super class
+  [Issue #613](https://github.com/influxdata/influxdb-java/issues/613)
 
 ## 2.14 [2018-10-12]
 

src/main/java/org/influxdb/dto/Point.java

@@ -235,19 +235,22 @@ public boolean hasFields() {
     public Builder addFieldsFromPOJO(final Object pojo) {
 
       Class<? extends Object> clazz = pojo.getClass();
+      while (clazz != null) {
 
-      for (Field field : clazz.getDeclaredFields()) {
+        for (Field field : clazz.getDeclaredFields()) {
 
-        Column column = field.getAnnotation(Column.class);
+          Column column = field.getAnnotation(Column.class);
 
-        if (column == null) {
-          continue;
-        }
+          if (column == null) {
+            continue;
+          }
 
-        field.setAccessible(true);
-        String fieldName = column.name();
-        addFieldByAttribute(pojo, field, column, fieldName);
-      }
+          field.setAccessible(true);
+          String fieldName = column.name();
+          addFieldByAttribute(pojo, field, column, fieldName);
+        }
+      clazz = clazz.getSuperclass();
+    }
 
       if (this.fields.isEmpty()) {
         throw new BuilderException("Class " + pojo.getClass().getName()