Add markdown to requirements
Add markdown to requirements

stefanhahmann/pybossa,CulturePlex/pybossa,geotagx/geotagx-pybossa-archive,geotagx/geotagx-pybossa-archive,geotagx/pybossa,proyectos-analizo-info/pybossa-analizo-info,Scifabric/pybossa,geotagx/geotagx-pybossa-archive,geotagx/pybossa,PyBossa/pybossa,Scifabric/pybossa,proyectos-analizo-info/pybossa-analizo-info,inteligencia-coletiva-lsd/pybossa,stefanhahmann/pybossa,geotagx/geotagx-pybossa-archive,jean/pybossa,OpenNewsLabs/pybossa,CulturePlex/pybossa,inteligencia-coletiva-lsd/pybossa,CulturePlex/pybossa,PyBossa/pybossa,OpenNewsLabs/pybossa,jean/pybossa,harihpr/tweetclickers,harihpr/tweetclickers,proyectos-analizo-info/pybossa-analizo-info,geotagx/geotagx-pybossa-archive