To enable the wiki for your repository, log into Bitbucket and do the following:

• Navigate to your bb101repo.
• Click the settings button.
  The system displays the Repository details page.
• Choose Wiki settings from the left-hand panel.
  The system opens the Wiki page. A private wiki is only visible to people who have permission to see it. A public wiki anyone can view, edit, or create pages.
• Click Private wiki.
• Press Save.
  The system enables the Wiki tab for your repository.