change concerns directory
add spec for join method
refactor join method
add spec for leave method
refactor members module
add spec for request_to_join
refactor request_to_join method
add spec fro delete_request method
refactor delete_request method
ユーザーをあなたに変更した
fix broken spec
fix broken spec
Revert "fix broken spec"

This reverts commit da2475b65ecc9b77a9e262c4f59eafcfd433757a.
rspec-railsの不具合みたいなのでrspec-railsのバージョンを一つ下げた
remove rake erd
Merge pull request #18 from 1syo/groups-members

Groups members