Add better warning about relocated mysql socket in README.md.
Add better warning about relocated mysql socket in README.md.

OSLL/mariadb-cookbooks,mrb/mysql,martinb3-cookbooks/mysql,nkadel-skyhook/nkadel-mysql-cookbook,hmuronaka/mysql,Amakata/mysql,damiendurant/mysql,torchlight-dev/mysql,martinb3-cookbooks/mysql,damiendurant/mysql,Krzana/mysql,OSLL/mariadb-cookbooks,bluespurs/mysql,juliandunn/mysql,juliandunn/mysql,zuazo-forks/chef-cookbooks-mysql,acoulton/mysql,pyama86/mysql,umegaya/mysql,WeAreCloudar/mysql,joseaomedes/mysql,acoulton/mysql,OSLL/mariadb-cookbooks,GannettDigital/chef-mysql,nkadel-skyhook/nkadel-mysql-cookbook,hmuronaka/mysql,dwashko/chef-mysql,martinb3-cookbooks/mysql,ffuenf/mysql,mattray/mysql,GannettDigital/chef-mysql,geleman/mysql,joseaomedes/mysql,pyama86/mysql,ffuenf/mysql,krinkin/mariadb,krinkin/mariadb,edmunds-chef/mysql,mrb/mysql,dwashko/chef-mysql,chef-cookbooks/mysql,umegaya/mysql,WeAreCloudar/mysql,Amakata/mysql,Krzana/mysql,mrb/mysql,umegaya/mysql,damiendurant/mysql,chef-cookbooks/mysql,GannettDigital/chef-mysql,storozhilov/mariadb-enterprise,ffuenf/mysql,joseaomedes/mysql,acoulton/mysql,bluespurs/mysql,nkadel-skyhook/nkadel-mysql-cookbook,geleman/mysql,torchlight-dev/mysql,edmunds-chef/mysql,krinkin/mariadb,zuazo-forks/chef-cookbooks-mysql,bluespurs/mysql,juliandunn/mysql,Amakata/mysql,dwashko/chef-mysql,chef-cookbooks/mysql,pyama86/mysql,edmunds-chef/mysql,WeAreCloudar/mysql,storozhilov/mariadb-enterprise,zuazo-forks/chef-cookbooks-mysql,Krzana/mysql,storozhilov/mariadb-enterprise,mattray/mysql,geleman/mysql,mattray/mysql,hmuronaka/mysql,torchlight-dev/mysql