added new 'pad' arg to colorizer.colorize()

@@ -353,10 +353,12 @@ Casper.prototype.each = function each(array, fn) {
  * Prints something to stdout.
  *
  * @param  String  text   A string to echo to stdout
+ * @param  String  style  An optional style name
+ * @param  Number  pad    An optional pad value
  * @return Casper
  */
-Casper.prototype.echo = function echo(text, style) {
-    var message = style ? this.colorizer.colorize(text, style) : text;
+Casper.prototype.echo = function echo(text, style, pad) {
+    var message = style ? this.colorizer.colorize(text, style, pad) : text;
     console.log(this.filter('echo.message', message) || message);
     return this;
 };

@@ -61,9 +61,9 @@ var Colorizer = function() {
      * @params  String  styleName
      * @return  String
      */
-    this.colorize = function colorize(text, styleName) {
+    this.colorize = function colorize(text, styleName, pad) {
         if (styleName in styles) {
-            return this.format(text, styles[styleName]);
+            return this.format(text, styles[styleName], pad);
         }
         return text;
     };
@@ -75,7 +75,7 @@ var Colorizer = function() {
      * @param  Object  style
      * @return String
      */
-    this.format = function format(text, style) {
+    this.format = function format(text, style, pad) {
         if (typeof style !== "object") {
             return text;
         }
@@ -91,6 +91,10 @@ var Colorizer = function() {
                 codes.push(options[option]);
             }
         }
+        // pad
+        if (typeof pad === "number" && text.length < pad) {
+            text += new Array(pad - text.length + 1).join(' ');
+        }
         return "\033[" + codes.join(';') + 'm' + text + "\033[0m";
     };
 };