Fixed incorrect log method in README.md

[Vedadiyan]

log.Fatal is mistakenly used in the following example (in the README file) which should be actually Println

func main() {
    // The default client is HTTP.
    c, err := cloudevents.NewClientHTTP()
    if err != nil {
	    log.Fatalf("failed to create client, %v", err)
    }
    log.Fatal(c.StartReceiver(context.Background(), receive));
} 

[embano1]

Thx for spotting this! One small comment

[embano1]

Can you please squash and sign your commits before merging?

[Vedadiyan]

I just squashed all the commits into one commit only