Add SourceforgeDefaultDownload.png

doc/4.7-final.md

@@ -77,6 +77,6 @@ Log into https://sourceforge.net/projects/civicrm/files/civicrm-stable and set t
 
 Eg: After 4.6.8 release, go to https://sourceforge.net/projects/civicrm/files/civicrm-stable/4.6.8/  . Click on "i" for `civicrm-4.6.8-drupal.tar.gz`, then select all "Default Download For" and "Save".
 
-(TODO: Embed screenshot https://wiki.civicrm.org/confluence/download/attachments/38633678/Screen%20Shot%202015-09-22%20at%204.42.24%20PM.png?version=1&modificationDate=1442920394000&api=v2 )
+![Marking a default release in SourceForge](/doc/images/SourceforgeDefaultDownload.png)
 
 Note that it takes some time to reflect default download on `sf.net`