Adding javadoc for public method

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1065207 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/lang3/JavaVersion.java

@@ -43,6 +43,17 @@ public enum JavaVersion {
         this.name = name;
     }
 
+    /**
+     * Whether this version of Java is at least the version 
+     * of Java passed in.
+     *
+     * For example:
+     *  myVersion.atLeast(JavaVersion.JAVA_1_4)
+     *
+     * @param requiredVersion to check this version is at least equivalent to
+     *
+     * @return Whether this version is at least the passed in version
+     */
     public boolean atLeast(JavaVersion requiredVersion) {
         return this.value >= requiredVersion.value;
     }