update to readme
update to readme

arvidsson/easyloggingpp,chenmusun/easyloggingpp,spthaolt/easyloggingpp,lisong521/easyloggingpp,simonhang/easyloggingpp,lisong521/easyloggingpp,simonhang/easyloggingpp,dreal-deps/easyloggingpp,blankme/easyloggingpp,arvidsson/easyloggingpp,utiasASRL/easyloggingpp,spqr33/easyloggingpp,spqr33/easyloggingpp,dreal-deps/easyloggingpp,arvidsson/easyloggingpp,utiasASRL/easyloggingpp,dreal-deps/easyloggingpp,spthaolt/easyloggingpp,spqr33/easyloggingpp,blankme/easyloggingpp,utiasASRL/easyloggingpp,chenmusun/easyloggingpp,lisong521/easyloggingpp,hellowshinobu/easyloggingpp,hellowshinobu/easyloggingpp,simonhang/easyloggingpp,blankme/easyloggingpp,hellowshinobu/easyloggingpp,spthaolt/easyloggingpp,chenmusun/easyloggingpp