add a readme-todo note about maven
add a readme-todo note about maven

opencog/relex,virneo/relex,ainishdave/relex,anitzkin/relex,leungmanhin/relex,ainishdave/relex,rodsol/relex,virneo/relex,ainishdave/relex,williampma/relex,rodsol/relex-temp,anitzkin/relex,rodsol/relex,rodsol/relex,williampma/relex,williampma/relex,anitzkin/relex,AmeBel/relex,rodsol/relex-temp,leungmanhin/relex,linas/relex,virneo/relex,virneo/relex,linas/relex,anitzkin/relex,opencog/relex,rodsol/relex,AmeBel/relex,AmeBel/relex,rodsol/relex-temp,rodsol/relex-temp,opencog/relex,anitzkin/relex,leungmanhin/relex,rodsol/relex-temp,williampma/relex,ainishdave/relex,linas/relex