Format name field
Modify resolution header row
Delete the 18th meetup homework
Add my favorite git command
Format
Add an appendix
Add Git command ranking 11-20
Fix sed regex
Replace 'Contributes' to 'Contributions'
Merge pull request #229 from yochiyochirb/update-odai-profile-for-meetup-20th

おだいのプロフィールを第20回用に更新しました