Add installation instructions.

README.md

@@ -1,2 +1,33 @@
 # grafana-zabbix
 Zabbix API datasource for Grafana dashboard
+
+## Installation
+
+### Grafana 1.9.x
+
+Download latest release and unpack into `<your grafana installation>/plugins/datasource/`. Then edit Grafana config.js:
+ * Add dependencies
+
+ ```
+ plugins: {
+ panels: [],
+ dependencies: ['datasource/zabbix/datasource', 'datasource/zabbix/queryCtrl'],
+ }
+ ```
+ * Add datasource and setup your Zabbix API url, username and password
+
+ ```
+ datasources: {
+ ...
+ },
+ zabbix: {
+ type: 'ZabbixAPIDatasource',
+ url: 'http://www.zabbix.org/zabbix/api_jsonrpc.php',
+ username: 'guest',
+ password: ''
+ }
+ },
+ ```
+
+### Grafana 2.0.x
+Now in development.