Add printf format compatibility

examples/console2.js

@@ -25,3 +25,5 @@ console.log(
 );
 
 console.tag("Combo!").time().file().log("A combo");
+
+console.log("A string %s and a number %d", "hello", "123"); //you can you printf-like format

lib/console2.js

@@ -74,6 +74,26 @@
         return '[' + infos.filename + ':' + infos.line + ']';
     };
 
+    /**
+     * areAllStringOrNumber
+     *
+     * Check in an array contains only string and number
+     *
+     * @param  {Array} arr
+     * @retrun {Boolean}
+     */
+    var areAllStringOrNumber = function (arr) {
+    
+        arr.forEach(function (elem) {
+            if (typeof elem !== 'string' && typeof elem !== 'number') {
+                return false;
+            }
+        });
+
+        return true;
+
+    };
+
     /**
      * applyColors
      *
@@ -194,7 +214,7 @@
             this._tags    = [];
             this._time    = false;
             this._date    = false;
-            this.location = false;
+            this._location = false;
     
             return this;
         };
@@ -234,7 +254,9 @@
      * Console2.prototype.tag
      *
      * Add tags
-     * @param  {*} tag 
+     * @param  {String|Object} tag
+     * @param  {String}        tag.msg   The tag
+     * @paral  {String|Array}  tag.color colors.js colors
      */
     Console2.prototype.tag = Console2.prototype.t = function () {
         var tags = Array.prototype.slice.call(arguments, 0);
@@ -311,8 +333,16 @@
         //It's time to log the args
 
         var args       = Array.prototype.slice.call(log.args, 0), //transform args in an array
-            msg        = "",    //the log message
+            msg        = "";    //the log message
-            delimiter  = '\n\n',
+
+        //if all args are string or number, format args as usual
+        if (areAllStringOrNumber(args)) {
+            msg = util.format.apply(this, args);   
+
+        //if objects or array present
+        } else {       
+            
+            var delimiter  = '\n\n',
                 multiLines = false; //if the log need multiples lines (ie. object, array)
 
             //Process arg one by one
@@ -341,6 +371,7 @@
                 msg += '\n';
                 msg = msg.replace(/\n/gm, '\n' + new Array(this.opt.spaceSize).join(' '));
             }
+        }
 
         result += msg;