Add .psqlrc to get automatic expanded display by default

Example using automatic expanded display:
  postgres=# SELECT repeat('x', 60);
                              repeat
  --------------------------------------------------------------
   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  (1 row)

  postgres=# SELECT repeat('x', 60), repeat('x', 60), repeat('x', 60);
  -[ RECORD 1 ]--------------------------------------------------------
  repeat | xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  repeat | xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  repeat | xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

  postgres=#