docs: add basic readme content

README.md

@@ -0,0 +1,34 @@
+# api-go
+
+Golang implementation of the Licensing API as defined by the [proto](https://code.pitz.tech/licensing/proto) repository. 
+
+```go
+package main
+
+import (
+	"google.golang.org/grpc"
+
+	"code.pitz.tech/licensing/api-go"
+)
+
+func main() {
+	clientConn, err := grpc.Dial("host:port") // grpc.Dial("host:port", dialopts...)
+	if err != nil {
+		panic(err)
+    }
+	
+	client, err := api.NewClient(api.ClientConfig{
+		ClientConn: clientConn,
+	})
+	if err != nil {
+		panic(err)
+    }
+	
+	client.Contributors()
+	client.Licenses()
+	client.Packages()
+	client.Products()
+	client.Tokens()
+	client.Users()
+}
+```