Add updated README about creating the chart

README.md

 # helm-nginx-example
 
-Helm chart to show basic usage with an nginx server
\ No newline at end of file
+Helm chart to show basic usage with an nginx server hosting static content.
+
+## How this was created
+
+```bash
+mkdir chart
+cd chart
+helm create helm-nginx-example
+```
+
+## How to use this
+
+```bash
+# TODO
+```
+