Added spec to show how #reload_attributes used to fail on a new records (fixed in the prev. commit).
Added spec to show how #reload_attributes used to fail on a new records (fixed in the prev. commit).

alloy/dm-core,engineyard/dm-core,tpitale/dm-core,joevandyk/dm-core,datamapper/dm-core,tillsc/dm-core,ar-dm/ardm-core