sponsors page updated

erpnext/change_log/current/spnsorship.md

@@ -0,0 +1,2 @@
+- Sales / Purchase Return Enahancement - **[Sponsored by Strella Consulting Sdn Bhd](http://www.strellagroup.com)**
+	 * Now you can make Delivery Note, Purchase Receipt or Sales / Purchase Invoice with negative quantity

sponsors.md

@@ -21,5 +21,13 @@
 				for Customer <a href="https://github.com/frappe/erpnext/issues/3451">#3451</a>
 			</td>
 		</tr>
+		<tr>
+			<td style="width: 30%">
+				<a href="http://www.strellagroup.com">Strella Consulting Sdn Bhd</a>
+			</td>
+			<td>
+				For Sales / Purchase Return Enhancement <a href="https://github.com/frappe/erpnext/issues/3582">#3582</a>
+			</td>
+		</tr>
 	</tbody>
 </table>