started learning 059 revise optimistic locking
fixed the ruby and gemset version
updated the rails version to 3.2.15
added the column of lock_version
update the field and added the lock column support
first approach to errror msg for exception according the lock_version
error msg based the fields
enhancement
started 059 optimistic locking by manual
version
updated rails version to rails 3.2.15
keep field about original updated at
model to generate and verify the update time