Updated epersons.md

Removed the metadata operations from epersons.md

Added the email patch operation and a note for administrator privilege operations.

epersons.md

@@ -12,6 +12,7 @@
 ### Replace
 The replace operation allows to replace *existent* information with new one. Attempt to use the replace operation to set not yet initialized information must return an error. See [general errors on PATCH requests](patch.md)
 
+#### These operations can be performed by administrators.
 
 To replace the certificate required value, `curl -X PATCH http://${dspace.url}/api/epersons/eperson/<:id-eperson> -H "Content-Type: application/json" -d '[{ "op": "replace", "path": "/certificate", "value": "true|false"]'`.  The operation also requires an Authorization header.
 
@@ -44,6 +45,7 @@ the replace operation `[{ "op": "replace", "path": "/netid", "value": "newNetId"
 ```json
   "netid": "newNetId",
 ```
+#### This operation can be performed by administrators and by the authenticated user.
 
 To replace the password value, `curl -X PATCH http://${dspace.url}/api/epersons/eperson/<:id-eperson> -H "Content-Type: application/json" -d '[{ "op": "replace", "path": "/password", "value": "newpassword"]'`.  The operation also requires an Authorization header.
 
@@ -55,4 +57,14 @@ the replace operation `[{ "op": "replace", "path": "/password", "value": "newpas
 ```json
   "password": "newpassword",
 ```
-Note: The new password is currently returned after an update but this could be revisited later, see [#30]((https://github.com/DSpace/Rest7Contract/issues/30))
+NOTE: The new password is currently returned after an update but this could be revisited later, see [#30]((https://github.com/DSpace/Rest7Contract/issues/30))
+
+To replace the email value, `curl -X PATCH http://${dspace.url}/api/epersons/eperson/<:id-eperson> -H "Content-Type: application/json" -d '[{ "op": "replace", "path": "/email", "value": "new@email"]'`.  The operation also requires an Authorization header.
+
+For example, starting with the following eperson field data:
+```json
+ "email": "old@email",
+```
+the replace operation `[{ "op": "replace", "path": "/email", "value": "new@email"]` will result in :
+```json
+  "email": "new@email",