     
     /**
      The values of NSStrikethroughStyleAttributeName and NSStrikethroughColorAttributeName
+     
+     ### example
+     ```
+     "StringStylizer".stylize().strokeThrogh(.StyleDouble, rgb: 0xff0000, alpha: 1).attr
+     ```
+     <img width="139" src="https://cloud.githubusercontent.com/assets/18320004/14389273/ddc222f2-fdec-11e5-9a80-0181383ef553.png">
      
      - parameter style:NSUnderlineStyle...
      - parameter rgb:UInt? (default:nil)

    /**
     The values of NSStrokeWidthAttributeName and NSStrokeColorAttributeName
     
     - parameter color:UIColor
     - parameter alpha:Double (default:1.0)
     - parameter width:Double (default:1.0)

    
    /** 
    The value of NSForegroundColorAttributeName
    
    ### example
     
    ```
    "StringStylizer".stylize().color(.redColor()).attr
    ```
    <img width="143" src="https://cloud.githubusercontent.com/assets/18320004/14388487/52403352-fde9-11e5-86fe-f94224dcc747.png">
     
    - parameter rgb:UInt
    - parameter alpha:Double (default: 1.0)
