Implement useName() method for setting a custom attribute name

lib/option.js

@@ -34,6 +34,7 @@ class Option {
     this.conflictsWith = [];
     this.implied = undefined;
     this.helpGroupHeading = undefined; // soft initialised when option added to command
+    this.attribName = undefined;
   }
 
   /**
@@ -194,6 +195,19 @@ class Option {
     return this;
   }
 
+    /**
+   * Allow to change the attribute name of this option.
+   *
+   * @param {string} attributeName is used for a alternated attribute name
+   * @return {Option}
+   */
+
+  setAttributeName(attributeName) {
+    if (typeof attributeName === 'string') {
+      this.attribName = attributeName;
+    }
+    return this;
+  }
   /**
    * Return option name.
    *
@@ -209,12 +223,17 @@ class Option {
 
   /**
    * Return option name, in a camelcase format that can be used
-   * as an object attribute key.
+   * as an object attribute key. 
+   * This method now uses alternativly the this.attributeName when it is set otherwise 
+   * it will still use the option name as before
    *
    * @return {string}
    */
 
   attributeName() {
+    if (typeof this.attribName === 'string') {
+      return this.attribName;
+    } 
     if (this.negate) {
       return camelcase(this.name().replace(/^no-/, ''));
     }