On my hosting provider, there is a slight tweak needed to get Grav to run on PHP 5.6. Here's the solution:
I just updated Grav to 1.1.1!
I opted to install Grav via the ZIP package, as documented here. My hosting provider does not give me shell access, so I would not be using git or the Grav Package Manager (GPM), but limiting myself to FTP or the cPanel File Manager.
In starting this blog, I installed and tested various Blogging and Content Management Systems (CMS), finally settling on Grav. Here's why I like Grav.