Update publications.pillar

Author: Ducasse

publications.pillar

@@ -10,6 +10,7 @@ It is normally limited to three sponsoring per research people.
 Note that this program does not apply on conferences already sponsored or organized by us (IWST for example).
 
 !!!Rules
+- The applicant should be an ESUG member or a Pharo association member.
 - After notification of acceptance, one of the authors sends to the ESUG board the article, a CV, and a brief explanation of how Smalltalk was used.
 - In case the ESUG board decides to support the promotion, the author has to send to ESUG after the camera-ready deadline a PDF of the article, where ESUG is referenced in the acknowledgment section, including a link to esug.org
 - During the presentation at the conference, the author must mention ESUG support (e.g. the ESUG Logo)