change the default log level to info
change the default log level to info

This makes it a bit more comforting to the user (and me as well). With
this the user sees a short description of the release.

lrascao/relx,tsloughter/relx,erlware/relx,umatomba/relx,bitwalker/relx,RJ/relx,ingwinlu/relx,zugolosian/relx,ethercrow/relx,timclassic/relx,priestjim/relx,Licenser/relx,syl20bnr/relx,bsmr-erlang/relx