Update Maintainer list in Readme
Update Maintainer list in Readme

mahsoud/sql_server,jerrelblankenship/sql_server,xacaxulu/sql_server,jakimowicz/sql_server,tpetchel/sql_server,tpetchel/sql_server,aaronstoddard/sql_server,xacaxulu/sql_server,opscode-cookbooks/sql_server,jakimowicz/sql_server,leyshon/sql_server,jerrelblankenship/sql_server,criteo-forks/sql_server,chef-cookbooks/sql_server,leyshon/sql_server,criteo-forks/sql_server,mahsoud/sql_server,chef-cookbooks/sql_server,opscode-cookbooks/sql_server,aaronstoddard/sql_server