Add javadoc to public constructor.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1546852 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/lang3/reflect/InheritanceUtils.java

@@ -25,6 +25,14 @@
  */
 public class InheritanceUtils {
 
+    /**
+     * <p>{@link InheritanceUtils} instances should NOT be constructed in standard programming.
+     * Instead, the class should be used as
+     * {@code MethodUtils.getAccessibleMethod(method)}.</p>
+     *
+     * <p>This constructor is {@code public} to permit tools that require a JavaBean
+     * instance to operate.</p>
+     */
     public InheritanceUtils() {
         super();
     }