Added credits and info into readme

plugin/openmeetings/readme.txt

@@ -1 +1,15 @@
-This plugin will create a link in existing and new courses for the teachers to start a videoconference room with Open Meeting, as well as the administration settings to configure this tool.
+This plugin will create a link in existing and new courses for the teachers to
+start a videoconference room with OpenMeetings, as well as the administration
+settings to configure this tool.
+
+More info on OpenMeetings: http://openmeetings.apache.org/
+More info on Chamilo: http://www.chamilo.org
+The tasks related to the development of this plugin:
+* https://support.chamilo.org/issues/5491
+* (private system access) https://task.beeznest.com/issues/7046
+* https://issues.apache.org/jira/browse/OPENMEETINGS-802
+People involved:
+* Financed by the Commission Scolaire des Hautes-Rivières, Québec, Canada
+* First draft developed by Francis Gonzales Tello - Independent (at the time)
+* First stable version published by Yannick Warnier - BeezNest/Chamilo team
+* Maxim Solodovnik - OpenMeetings team - many thanks to him!