Added 'text-decoration': .none, .through and .underline for text

[Bryant-24]

I would like to add the ability to change the text formatting using the textDecoration modifier, which has the values:

• .underline
• .through
• .none

  
  
  The .none value can also be used for links if you want to place a link without the underscore

[twostraws]

Wonderful – thank you!