Adding some documentation

README.md

@@ -1,3 +1,31 @@
 # ansible-role-haproxy
 
-Ansible role to install and configure HAProxy load balancer
+Ansible role to install and configure HAProxy load balancer
+
+## Installation
+
+In your Ansible repo's `requirements.txt` file, you can include it as detailed below and install it via `ansible-galaxy`.
+
+```yaml
+roles:
+  - src: ascendings.haproxy
+    version: 0.1.0 # change this as needed
+```
+
+## vars
+
+This section lists the available vars to configure this role.
+
+`haproxy_backend_servers` - A hash of servers to use in the backend; example:
+
+```yaml
+haproxy_backend_servers:
+  - name: web01
+    address: 192.168.1.10
+    port: 80 # optional; default is 80
+  - name: web02
+    address: 192.168.1.11
+    port: 80
+```
+
+`haproxy_backend_balance` - Defines the backend load-balancing method; refer to [the HAProxy docs]() for valid options.