GitHub importer description

doc/workflow/README.md

@@ -8,4 +8,5 @@
 - [GitLab Flow](gitlab_flow.md)
 - [Notifications](notifications.md)
 - [Migrating from SVN to GitLab](migrating_from_svn.md)
+- [Project importing from GitHub to GitLab](import_projects_from_github.md)
 - [Protected branches](protected_branches.md)

doc/workflow/import_projects_from_github.md

+# Project importing from GitHub to GitLab
+
+You can import your existing GitHub projects to GitLab. But keep in mind that it is possible only if
+GitHub support is enabled on your GitLab instance. You can read more about GitHub support [here](http://doc.gitlab.com/ce/integration/github.html)
+To get to the importer page you need to go to "New project" page.
+
+![New project page](github_importer/new_project_page.png) 
+
+Click on the "Import project from GitHub" link and you will be redirected to GitHub for permission to access your projects. After accepting, you'll be automatically redirected to the importer.
+
+![Importer page](github_importer/importer.png)
+
+To import a project, you can simple click "Add". The importer will import your repository and issues. Once the importer is done, a new GitLab project will be created with your imported data.
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