title: Not able to upload `.flv` - file(s) with ng2-file-upload
body: <p>Here is my mime types:</p>
  
  <pre><code>allowedMimeType = [
          'image/jpeg',
          'video/x-msvideo',
          'application/x-troff-msvideo',
          'video/avi',
          'video/msvideo',
          'video/x-msvideo',
          'application/x-shockwave-flash',
          'video/x-flv',
          'video/x-ms-wmv',
          'video/quicktime',
          'video/mp4',
          'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
          'application/msword',
          'text/plain'
      ];
  </code></pre>
  
  <p>when i try to upload the <code>.flv</code> - files, getting error as <code>invalid file type</code>. what is wrong with my declaration? any one help me?</p>
  
  <p>all other file types are working fine.</p>
  
  <p><code>this.fileUploader = new FileUploader(
              {
                  allowedMimeType: this.allowedMimeType,
                  maxFileSize: this.singleMaxFileSize,
                  removeAfterUpload: true,
                  queueLimit: 1
              }
          );</code></p>