Merge pull request #8 from rkhozinov/daemon-experimental

Allow configure experimental mode
diff --git a/README.rst b/README.rst
index 4e13e9d..ea43d20 100644
--- a/README.rst
+++ b/README.rst
@@ -23,6 +23,7 @@
     docker:
       host:
         enabled: true
+        experimental: true
         insecure_registries:
           - 127.0.0.1
         log:
diff --git a/docker/files/daemon.json b/docker/files/daemon.json
index 018d259..d1bdb8f 100644
--- a/docker/files/daemon.json
+++ b/docker/files/daemon.json
@@ -1,5 +1,9 @@
 {% from "docker/map.jinja" import host with context %}
 {
+  {%- if host.experimental is defined %}
+  "experimental": {{ host.experimental|lower }}
+  {%- if host.insecure_registries is defined %},{% endif %}
+  {%- endif %}
   {%- if host.insecure_registries is defined %}
   "insecure-registries": [
     {%- for registry in host.insecure_registries %}