Added sample problem: missioners
Added sample problem: missioners

emoron/simpleai,printedheart/simpleai,emoron/simpleai,printedheart/simpleai,iamaziz/simpleai,iamaziz/simpleai,simpleai-team/simpleai,emoron/simpleai,simpleai-team/simpleai,matuu/simpleai,simpleai-team/simpleai,matuu/simpleai,matuu/simpleai,printedheart/simpleai,iamaziz/simpleai