import/export docs

doc/administration/import_export.md

+# Project import/export
+
+Existing projects running on any GitLab instance or GitLab.com can be exported
+with all its related data and moved into a new GitLab instance.
+
+## Requirements
+
+- You will need at least GitLab version 8.9 running on both instances
+- Importing may not be possible if the import instance version is lower
+ than the exporter.
+ 
+## Exported contents
+ 
+* The following items will be exported:
+  * Project and wiki repositories
+  * Project uploads
+  * Project configuration including web hooks and services
+  * Issues with comments, merge requests with diffs and comments, labels, milestones, snippets,
+   and other project entities
+* The following items will NOT be exported:
+  * Build traces and artifacts
+  * LFS objects
+
+## Exporting a project and its data 
+
+1. Go to the project settings page and find the Export button.
+
+    ![export_1](./img/export_1.png)
+
+2. Once the export is generated, you should receive an e-mail with a link to download the file.
+
+    ![export_3](./img/export_3.png)
+
+3. You can come back to project settings and download the file from there, or delete it so it
+can be generated again.
+
+    ![export_4](./img/export_4.png)
+
+## Import
+
+1. The new GitLab project import feature is at the far right of the import options on New Project.
+
+    ![import_1](./img/import_1.png)
+
+2. After choosing a namespace or path, you can then select the file prevoiusly exported.
+
+    ![import_2](./img/import_2.png)
+    
+
+3. Click on Import and the import now begins and you will see your newly imported project page soon.