修正したファイルのみチェック

For rubocop

$ echo $(git diff origin/master `git branch | grep '*' | cut -d' ' -f2` | grep 'diff --git' | sed -E 's#diff --git a\/(.+) b\/.+#\1#') | { read FILES; bundle exec rubocop $FILES; }

For rspec

$ echo $(git diff origin/master `git branch | grep '*' | cut -d' ' -f2` | grep 'diff --git' | sed -E 's#diff --git a\/(.+) b\/.+#\1#' | grep spec) | { read FILES; bundle exec rspec $FILES; }