+ Add rennes demo as submodule

.gitmodules

@@ -13,3 +13,6 @@
 [submodule "Assets/AddOns/physiodata"]
 	path = Assets/AddOns/physiodata
 	url = git@gitlab.inria.fr:crowdmp/addons/physiodata.git
+[submodule "Assets/Demo/RennesReworked"]
+	path = Assets/Demo/RennesReworked
+	url = git@gitlab.inria.fr:crowdmp/demo/rennesreworked.git

Assets/Demo.meta

+fileFormatVersion: 2
+guid: 5eca6ecdb4854084eb1b4fa61f35ccdf
+folderAsset: yes
+timeCreated: 1554810758
+licenseType: Free
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

RennesReworked @ 143bb4e4

+Subproject commit 143bb4e4cb8ca85283a136a4ba6960704c7d8dfb

Assets/Demo/RennesReworked.meta

+fileFormatVersion: 2
+guid: 15eb834652c954047be67f869b4780a5
+folderAsset: yes
+timeCreated: 1554810758
+licenseType: Free
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: