title: jshint "use strict" issue
body: <p>Here's my file: <code>app/scripts/controllers/main.js</code></p>
  
  <pre><code>"use strict";
  
  angular.module('appApp')
    .controller('MainCtrl', ['$scope', function ($scope) {
      $scope.awesomeThings = [
        'HTML5 Boilerplate',
        'AngularJS',
        'Karma'
      ];
    }]);
  </code></pre>
  
  <p>My <code>Gruntfile.coffee</code> has:</p>
  
  <pre><code>jshint:
      options:
          globals:
              require: false
              module: false
              console: false
              __dirname: false
              process: false
              exports: false
  
      server:
          options:
              node: true
          src: ["server/**/*.js"]
  
      app:
          options:
              globals:
                  angular: true
                  strict: true
  
          src: ["app/scripts/**/*.js"]
  </code></pre>
  
  <p>When I run <code>grunt</code>, I get:</p>
  
  <pre><code>Linting app/scripts/controllers/main.js ...ERROR
  [L1:C1] W097: Use the function form of "use strict".
  "use strict";
  </code></pre>