Better example of retrieving GET params

[docyes]

I spent some time reading and hacking out some examples and have been unable to retrieve GET params from the query string. None of the examples address this as the one specific example has it in the path of the url.

[agentzh]

Here's a small example:

location /cat {
    set_unescape_uri $name $arg_name;   # this requires ngx_set_misc
    set_quote_pgsql_str $name;   # ditto
    postgres_query 'select * from cats where name = $name';
    postgres_pass my_pg_backend;
}

Have fun :) -agentzh

[agentzh]

I've added this sample to README and this ticket can be closed.

Thanks for the suggestion :)

-agentzh