Add README file to contrib folder
Add README file to contrib folder

tdz/olsrd,ralisi/olsrd_cl_roam,sauloqueiroz/incremental-spf,cholin/olsrd,diogomg/olsrd-binary-heap,cholin/olsrd,zioproto/olsrd-gsoc2012,ralisi/olsrd_cl_roam,cholin/olsrd,sauloqueiroz/incremental-spf,servalproject/olsr,diogomg/olsrd,diogomg/olsrd-binary-heap,ninuxorg/olsrd,ralisi/olsrd_cl_roam,nolith/olsrd,sauloqueiroz/incremental-spf,duydb2/olsr,nolith/olsrd,nolith/olsrd,duydb2/olsr,tdz/olsrd,ninuxorg/olsrd,tdz/olsrd,diogomg/olsrd-binary-heap,ninuxorg/olsrd,servalproject/olsr,duydb2/olsr,diogomg/olsrd,sebkur/olsrd,servalproject/olsr,zioproto/olsrd-gsoc2012,zioproto/olsrd,ninuxorg/olsrd,diogomg/olsrd-binary-heap,duydb2/olsr,sebkur/olsrd,cl4u2/olsrd-wot-pgp,acinonyx/olsrd,servalproject/olsr,diogomg/olsrd-binary-heap,sebkur/olsrd,zioproto/olsrd,zioproto/olsrd,servalproject/olsr,diogomg/olsrd,nolith/olsrd,zioproto/olsrd-gsoc2012,brabander/olsr,acinonyx/olsrd,duydb2/olsr,sebkur/olsrd,acinonyx/olsrd,tdz/olsrd,servalproject/olsr,sebkur/olsrd,brabander/olsr,acinonyx/olsrd,ralisi/olsrd_cl_roam,zioproto/olsrd-gsoc2012,cl4u2/olsrd-wot-pgp,duydb2/olsr,zioproto/olsrd-gsoc2012,sauloqueiroz/incremental-spf,cholin/olsrd,zioproto/olsrd,diogomg/olsrd-binary-heap,brabander/olsr,cholin/olsrd,diogomg/olsrd,cl4u2/olsrd-wot-pgp,duydb2/olsr,diogomg/olsrd-binary-heap,diogomg/olsrd,diogomg/olsrd,cl4u2/olsrd-wot-pgp,brabander/olsr,cl4u2/olsrd-wot-pgp,tdz/olsrd,nolith/olsrd,diogomg/olsrd,duydb2/olsr,zioproto/olsrd-gsoc2012,acinonyx/olsrd,ninuxorg/olsrd,zioproto/olsrd,sebkur/olsrd