Update mongo find_and_modify syntax
Update mongo find_and_modify syntax

tlunter/oboe-ruby,appneta/ruby-traceview,appneta/ruby-traceview,appneta/ruby-traceview,boyang-li/oboe-ruby,tlunter/oboe-ruby,appneta/ruby-traceview,boyang-li/oboe-ruby,boyang-li/oboe-ruby,boyang-li/oboe-ruby,tlunter/oboe-ruby,tlunter/oboe-ruby