add webmock and vcr to gemfile
configure webmock and vcr in spec_helper.rb
add spec file
event_management_spec.rb
Revert "add spec file"

This reverts commit 43d36f3c18888ef876d2e74b15122ef4895be750.
generate events_controller
edit confiugration in spec_helper.rb
using vrc macro with RSpec
events controller spec 테스트 작성
get Facebook events
recorded data using vcr