title: bootstrap-theme.css.map not generated by Web Essentials
body: <p>When Web Essentials minifies css files, it does not generate the map files.
  Do I miss any special settings?</p>
  
  <p>Here's my <code>WebEssentials-Settings.json</code>:</p>
  
  <pre><code>{
    "BrowserLink": {
      "CssIgnorePatterns": "bootstrap*; reset.css; normalize.css; jquery*; toastr*; foundation*; animate*; inuit*; elements*; ratchet*; hint*; flat-ui*; 960*; skeleton*",
      "EnableMenu": true,
      "EnablePixelPushing": true,
      "ShowMenu": true
    },
    "CodeGen": {
      "CamelCasePropertyNames": true,
      "CamelCaseTypeNames": false
    },
    "CoffeeScript": {
      "CompileOnBuild": false,
      "CompileOnSave": true,
      "GenerateSourceMaps": true,
      "LintOnBuild": false,
      "LintOnSave": true,
      "LintResultLocation": "Message",
      "MinifyInPlace": false,
      "OutputDirectory": null,
      "ShowPreviewPane": true,
      "WrapClosure": true
    },
    "Css": {
      "AdjustRelativePaths": true,
      "AutoMinify": true,
      "GzipMinifiedFiles": false,
      "ShowBrowserTooltip": true,
      "ShowInitialInherit": false,
      "ShowUnsupported": true,
      "SyncVendorValues": true,
      "ValidateEmbedImages": true,
      "ValidateOverQualifiedSelector": true,
      "ValidateStarSelector": true,
      "ValidateVendorSpecifics": true,
      "ValidateZeroUnit": true,
      "ValidationLocation": "Messages"
    },
    "General": {
      "AllMessagesToOutputWindow": false,
      "KeepImportantComments": true,
      "SvgPreviewPane": true
    },
    "Html": {
      "AutoMinify": false,
      "EnableAngularValidation": true,
      "EnableEnterFormat": true,
      "GzipMinifiedFiles": false,
      "ImageDropFormats": [
        {
          "HtmlFormat": "&lt;img src=\"{0}\" alt=\"\" /&gt;",
          "Name": "Simple Image Tag"
        },
        {
          "HtmlFormat": "&lt;div&gt;&lt;img src=\"{0}\" alt=\"\" /&gt;&lt;/div&gt;",
          "Name": "Enclosed in Div"
        },
        {
          "HtmlFormat": "&lt;li id=\"item_{1}\"&gt;&lt;img src=\"{0}\" alt=\"\" /&gt;&lt;/li&gt;",
          "Name": "Enclosed as List Item"
        },
        {
          "HtmlFormat": "&lt;div style=\"background-image=url('{0}')\"&gt;&lt;/div&gt;",
          "Name": "Inline CSS"
        }
      ]
    },
    "JavaScript": {
      "AutoMinify": true,
      "BlockCommentCompletion": true,
      "GenerateSourceMaps": true,
      "GzipMinifiedFiles": false,
      "LintOnBuild": false,
      "LintOnSave": true,
      "LintResultLocation": "Message"
    },
    "Less": {
      "CompileOnBuild": false,
      "CompileOnSave": true,
      "EnableChainCompilation": true,
      "GenerateSourceMaps": true,
      "MinifyInPlace": false,
      "OutputDirectory": null,
      "ShowPreviewPane": true
    },
    "Markdown": {
      "AutoHyperlink": false,
      "AutoNewLines": false,
      "CompileOnBuild": false,
      "CompileOnSave": true,
      "EncodeProblemUrlCharacters": false,
      "GenerateXHTML": true,
      "LinkEmails": false,
      "MinifyInPlace": false,
      "OutputDirectory": null,
      "ShowPreviewPane": true,
      "StrictBoldItalic": false
    },
    "Scss": {
      "CompileOnBuild": false,
      "CompileOnSave": true,
      "EnableChainCompilation": true,
      "GenerateSourceMaps": true,
      "MinifyInPlace": false,
      "OutputDirectory": null,
      "ShowPreviewPane": true
    },
    "SweetJs": {
      "CompileOnBuild": false,
      "CompileOnSave": true,
      "GenerateSourceMaps": true,
      "MinifyInPlace": false,
      "OutputDirectory": null,
      "ShowPreviewPane": true
    },
    "TypeScript": {
      "LintOnBuild": false,
      "LintOnSave": true,
      "LintResultLocation": "Message",
      "ShowPreviewPane": true
    }
  }
  </code></pre>