adds a note on how to force a version of PHP in a site
adds a note on how to force a version of PHP in a site

saucal/VVV,saucal/VVV,clreed87/VVV,Varying-Vagrant-Vagrants/VVV,DrewAPicture/varying-vagrant-vagrants,WybrenKoelmans/VVV,DrewAPicture/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,clreed87/VVV,Varying-Vagrant-Vagrants/VVV,saucal/VVV,trepmal/varying-vagrant-vagrants,tomjn/varying-vagrant-vagrants,tomjn/varying-vagrant-vagrants,WybrenKoelmans/VVV,erikjoling/VVV,speartail/VVV,trepmal/varying-vagrant-vagrants,erikjoling/VVV,salcode/VVV,salcode/VVV,speartail/VVV