Improve documentation

README.md

@@ -1,20 +1,28 @@
 # Nginx Docker Image with GeoIP 2 Support
 
-Build container:
-
-    ./scripts/docker-build.sh
+[![](https://imagelayers.io/badge/czerasz/nginx-geoip2:latest.svg)](https://imagelayers.io/?images=czerasz/nginx-geoip2:latest 'Get your own badge on imagelayers.io')
 
-Usage:
+## Usage
 
-    FROM czerasz/nginx-geoip2:1.9.4
+```bash
+docker run -d --name=nginx czerasz/nginx-geoip2:latest
+```
 
-    # Add GeoIP configuration file to enable GeoIP 2 variables
-    ADD ./config/geoip2.conf /etc/nginx/conf.d/geoip2.conf
+Or use in `Dockerfile`:
 
-Run container:
+```
+FROM czerasz/nginx-geoip2:latest
 
-    docker run -d --name='nginx-geoip2-test' 'czerasz/nginx-geoip2:1.9.4'
+# Add GeoIP configuration file to enable GeoIP 2 variables
+ADD ./config/geoip2.conf /etc/nginx/conf.d/geoip2.conf
+```
 
 ## Test
 
-    ./test/test.sh
+Build container:
+
+    ./scripts/docker-build.sh
+
+Run tests:
+
+    ./test/test.sh