add print() function to reporters

lib/vows/reporters/dot-matrix.js

@@ -58,5 +58,8 @@ this.report = function (data, s) {
             puts('\n\n * ' + stylize(event.error, 'red'));
             break;
     }
-    return buffer.join('');
+};
+
+this.print = function (str) {
+    sys.print(str);
 };

lib/vows/reporters/json.js

@@ -2,6 +2,9 @@ var sys = require('sys');
 //
 // Console JSON reporter
 //
+this.name = 'json';
 this.report = function (obj) {
     sys.puts(JSON.stringify(obj));
 };
+
+this.print = function (str) {};

lib/vows/reporters/spec.js

@@ -49,3 +49,6 @@ this.report = function (data, s) {
     }
 };
 
+this.print = function (str) {
+    sys.print(str);
+};