      
      ### example
      ```
+     
+     
      "StringStylizer".stylize().font(.Copperplate_Light).attr
+     
      ```
      <img width="147" src="https://cloud.githubusercontent.com/assets/18320004/14388776/a274bf68-fdea-11e5-9634-840d0b5fdacb.png">
      

     The value of NSShadowAttributeName. 
     
     Arguments are offset, rgb, alpha, blurRadius to make NSShadow
     
     - parameter offset:(width: Double, height: Double)? offset (default is nil)
     - parameter rgb:UInt? Color with rgb (default is nil)

     
     ### example
     ```
     
     
     "StringStylizer".stylize().font("Copperplate-Light").attr
     
     ```
     <img width="147" src="https://cloud.githubusercontent.com/assets/18320004/14388776/a274bf68-fdea-11e5-9634-840d0b5fdacb.png">
     
