Update the threat Dragon Home Page

[JOSHUAJEBARAJ]

Recently owasp-threat-dragon starts supporting linux for Desktop but the home page still says Linux coming soon Please update it As soon as possible

https://threatdragon.org/login

[jgadsden]

Thankyou @JOSHUAJEBARAJ - this is a very good point. The gh-pages branch was updated a while ago to include Linux as a supported platform, and so http://docs.threatdragon.org is updated.

However, https://threatdragon.org needs @mike-goodwin to promote it to the web site by making a commit to the master branch, and also to the development branch

@mike-goodwin could you promote the latest application to the website please? Many thanks

[jgadsden]

As version 1.3 is coming along soon, in the next two weeks - I could provide PR to both master and development that will fix up both demonstration sites if @mike-goodwin merges them?