added info about GitHub importing

doc/workflow/importing/import_projects_from_github.md

@@ -3,6 +3,8 @@
 It takes just a couple of steps to import your existing GitHub projects to GitLab. 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)
 
+You can import your existing GitHub Enterprise projects following these same steps. You'll also need to [enable GitHub Enterprise support](http://doc.gitlab.com/ee/integration/github.html) on your GitLab instance.
+
 * Sign in to GitLab.com and go to your dashboard.
 * To get to the importer page, you need to go to the "New project" page.
 
@@ -15,4 +17,4 @@ GitHub support is enabled on your GitLab instance. You can read more about GitHu
 * 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.
 
 ### Note
-When you import your projects from GitHub, it is not possible to keep your labels and milestones and issue numbers won't match. We are working on improving this in the near future.
+When you import your projects from GitHub, it is not possible to keep your labels and milestones and issue numbers won't match. We are working on improving this in the near future.
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