Add info about upcoming Wekan App Development Platform.
Add info about upcoming Wekan App Development Platform.

wekan/wekan,wekan/wekan,ddanssaert/wekan,wekan/wekan,nztqa/wekan,ddanssaert/wekan,libreboard/libreboard,Serubin/wekan,johnleeming/wekan,jtickle/wekan,GhassenRjab/wekan,wekan/wekan,oliver4u/WEKAN_runpartner,mario-orlicky/wekan,johnleeming/wekan,oliver4u/sap-wekan,GhassenRjab/wekan,Serubin/wekan,jtickle/wekan,ddanssaert/wekan,Serubin/wekan,johnleeming/wekan,GhassenRjab/wekan,mario-orlicky/wekan,libreboard/libreboard,jtickle/wekan,mario-orlicky/wekan,nztqa/wekan,oliver4u/sap-wekan,nztqa/wekan,oliver4u/WEKAN_runpartner,oliver4u/WEKAN_runpartner,wekan/wekan,oliver4u/sap-wekan,johnleeming/wekan