Add daemon submodule and Docker support

Update .gitignore and README.md
Add .gitreview file

Change-Id: If4800ae668ecc38cf64bfca540c6f0731541fb42
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..5c29e0e
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,6 @@
+[gerrit]
+host=review.jami.net
+port=29420
+project=jami-web
+defaultremote=origin
+defaultbranch=master