Add a README file

contrib/ansible/README.md

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+# Kubernetes Ansible
+
+This playbook helps you to set up a Kubernetes cluster on machines where you
+can't or don't want to use the salt scripts and cluster up/down tools. They
+can be real hardware, VMs, things in a public cloud, etc.
+
+## Usage
+
+* Record the IP address of which machine you want to be your master
+* Record the IP address of the machine you want to be your etcd server (often same as master)
+* Record the IP addresses of the machines you want to be your minions. (master can be a minion)
+
+Stick the system information into the 'inventory' file.
+
+### Configure your cluster
+
+You will want to look though all of the options in `group_vars/all.yml` and
+set the variables to reflect your needs. The options should be described there
+in full detail.
+
+### Set up the actual kubernetes cluster
+
+Now run the setup:
+
+    $ ansible-playbook -i inventory cluster.yml
+
+In generel this will work on very recent Fedora, rawhide or F21.  Future work to
+support RHEL7, CentOS, and possible other distros should be forthcoming.
+
+### You can just set up certain parts instead of doing it all
+
+Only the kubernetes daemons:
+
+    $ ansible-playbook -i inventory kubernetes-services.yml
+
+Only etcd:
+
+    $ ansible-playbootk -i inventory etcd.yml
+
+Only flannel:
+
+    $ ansible-playbook -i inventory flannel.yml