README: Improved section about experimental AQL
README: Improved section about experimental AQL

jabbrwcky/guacamole,triAGENS/guacamole,jabbrwcky/guacamole,triAGENS/guacamole,triAGENS/guacamole,triAGENS/guacamole,jabbrwcky/guacamole,jabbrwcky/guacamole