doc: pointed the config.json file description to wiki

README.md

@@ -11,7 +11,7 @@ These instructions will get you a copy of the project up and running on your loc
 To install SiB App, you'll need:
 
  * A SIB server with the appropriate modules
- * A Prosody Server
+ * A Prosody Server (with [appropriate modules](https://git.happy-dev.fr/startinblox/prosody/custom-prosody-modules/)
  * A SMTP Server (optional)
  * NodeJS on your machine
 
@@ -63,16 +63,17 @@ Get the code of the SIB app on your machine:
 $ git clone ...
 ```
 
-Then create a `config.json` with all the server hosting the capabilities the SIB App requires (for convienence a `config.sample.json` exsits):
-```
-{
-  "sdn": "http://api.myserver.com", # Or localhost:8000
-  "cdn": "https://cdn.happy-dev.fr",
-  "xmpp": "https://prosody.myserver.com/http-bind/",
-  "client_id": "000000" # <- Here goes your previously created Client ID
-},
-```
-FIXME: complete the file and explain details
+Then create a `config.json` with all the the capabilities the SIB App requires. Which are:
+
+ * businessproviders
+ * circles
+ * groups
+ * joboffers
+ * projects
+ * skills
+ * users
+
+[The documentation](https://git.happy-dev.fr/startinblox/devops/doc/wikis/create_sib_application) explains the details of this file but for convienence a `config.sample.json` exists in the source.
 
 Then build your new SIB App:
 ```