Deploying custom CSS, jQuery and JavaScript on 15 Hive

Hi All, 

There is a business requirement where developers are creating a creating common custom CSS, jQuery and JavaScript that has to be deployed to the 15 hive and these CSS, JavaScript will be referenced by all the web applications. 

1. Which is best way to deploy these custom files on to SharePoint 2013 environment? Does copy these filesmanually to application and web server right approach?  
2. Does providingfarm scope in Visual Studio 2013, using SharePoint Mapped Folders and deploy these files can be used?

Any help would be greatly appreciated.  
Thanks in advance.     

Sandy