add contributing guidelines
add contributing guidelines
ndchorley/planner,laszpio/planner,codebar/planner,ndchorley/planner,dondonz/planner,margOnline/planner,webycel/planner,lislis/planner,jlsync/planner,boddhisattva/planner,despo/planner,matyikriszta/planner,spike01/planner,codebar/planner,boddhisattva/planner,deniseyu/planner,laszpio/planner,codebar/planner,webycel/planner,legoscia/planner,spike01/planner,despo/planner,dondonz/planner,legoscia/planner,boddhisattva/planner,jlsync/planner,despo/planner,spike01/planner,laszpio/planner,webycel/planner,margOnline/planner,lislis/planner,lislis/planner,deniseyu/planner,deniseyu/planner,codebar/planner,despo/planner,legoscia/planner,dondonz/planner,jlsync/planner,margOnline/planner,spike01/planner,laszpio/planner,matyikriszta/planner,ndchorley/planner,matyikriszta/planner