add to time method in HourDrop
add opening hour spec
merge master and change model name opening hour to business hour
change model opening hour to business hour
update opening hour spec model
fix error test business hour drop spec
fix error test request drop
change model business hour to opening hour
add alias_name business_hours
add 24h checking day
to_time return date obj
update business_hour, hour drop test, listing alias method opening hour
simplify business_hour
Merge pull request #15 from yoolk/opening_hours

Opening hours
Merge branch 'master' into multilinguals
refactor multilinguals