Fix grammar on 'containsAtLeast' message (#28)

* Fix grammar on 'containsAtLeast' message

Fix #25

* Fix tests

Author: Steve Hobbs

lib/rules/containsAtLeast.js

@@ -3,7 +3,7 @@ var _ = require('../helper');
 var contains = require('./contains');
 
 function createIntroMessage() {
-  return 'Contain at least %d of the following %d types of characters:';
+  return 'At least %d of the following %d types of characters:';
 }
 
 module.exports = {

test/policies/excellent.js

@@ -3,7 +3,7 @@ var expect = require('chai').expect;
 var createPolicy = require('../../index');
 
 var excellentPolicyDescription = '* At least 10 characters in length\n' +
-  '* Contain at least 3 of the following 4 types of characters:\n' +
+  '* At least 3 of the following 4 types of characters:\n' +
   ' * lower case letters (a-z)\n' +
   ' * upper case letters (A-Z)\n' +
   ' * numbers (i.e. 0-9)\n' +

test/policies/good.js

@@ -3,7 +3,7 @@ var expect = require('chai').expect;
 var createPolicy = require('../../index');
 
 var goodPolicyDescription = '* At least 8 characters in length\n' +
-  '* Contain at least 3 of the following 4 types of characters:\n' +
+  '* At least 3 of the following 4 types of characters:\n' +
   ' * lower case letters (a-z)\n' +
   ' * upper case letters (A-Z)\n' +
   ' * numbers (i.e. 0-9)\n' +

test/rules/containsAtLeast.js

@@ -8,7 +8,7 @@ var charsets = containsAtLeast.charsets;
 
 function createMissingEntry(x, y, items, verified) {
   var d = {
-    message: 'Contain at least %d of the following %d types of characters:',
+    message: 'At least %d of the following %d types of characters:',
     code: 'containsAtLeast',
     format: [x, y],
     items: items