show usage when no flags specified

README.md

@@ -4,7 +4,7 @@
 
 An End of Life Date API SDK written in Go
 
-This is a fairly simple wrapper around the endoflife.date API
+This is a wrapper around the endoflife.date API
 [Read the Docs](https://endoflife.date/docs/api)
 
 ## Installation

cmd/eoldate/main.go

@@ -52,6 +52,11 @@ func main() {
 		os.Exit(0)
 	}
 
+	if eolOptions.Tech == "" {
+		gologger.Info().Msg("No technologies specified")
+		flag.Usage()
+		os.Exit(1)
+	}
 	releaseVersions, err := client.GetProduct(eolOptions.Tech)
 	if err != nil {
 		fmt.Printf("Error fetching product data: %v\n", err)

eoldate.go

@@ -7,7 +7,7 @@ import (
 	"net/http"
 )
 
-const CurrentVersion = `v0.0.2`
+const CurrentVersion = `v0.0.3`
 const EOLBaseURL = "https://endoflife.date/api"
 
 // Options ...