Prevent duplicate audits being created (fixes #8)
Prevent duplicate audits being created (fixes #8)

Signed-off-by: Kenneth Kalmer <84c35a3afda487b4c6fddf4acbad2a5edf604e05@gmail.com>

brandonaaron/acts_as_audited,lrgalego/audited,ishail/audited,instacart/audited,ledermann/audited,airbnb/audited,ZHANGJIE982/audited,Datacom/audited,ajoulie/audited,cfiorini/audited,GhostGroup/audited,reenhanced/audited,collectiveidea/audited,xuwupeng2000/audited,simplepractice/audited,ConsultingMD/audited,azanar/audited,ontrack/audited,klatunetworks/audited,happio/audited,ktheory/acts_as_audited