Update DevelopmentGuidelines.md

Author: nataled

docs/DevelopmentGuidelines.md

@@ -6,10 +6,12 @@ title: Ontology Development Guidelines
 ### Releases
 
     * Keep your edit file (the file you change on a regular basis) and your release files strictly separate
-    * Imports should be merged into the main release file
 
 ### Collaboration
 
     * Tag your GitHub repository with the obofoundry tag so that people can find it: https://github.com/topics/obofoundry
 
+NOT CLASSIFIED:
+    - Document how to add logo #72 = instructs how to add a logo to the ontology's OBO Foundry web page
+    - Use standard phrasing for short ontology descriptions #1968