Update README (#45)

* Update README.md

API access is now enabled for user with free plan

* Increase timeout

Author: Fabrizio Mirabito

README.md

@@ -31,9 +31,7 @@ For a working example, see [the example folder](https://github.com/arduino/iot-c
 
 ## How to get Arduino IoT Cloud Client Credentials
 
-**NOTE:** Client Credentials are an Arduino IoT Cloud Maker Plan feature. Form more informations check the [Arduino Store](https://store.arduino.cc/digital/create).
-
-You can generate Arduino IoT Cloud Client Credentials in the `ARDUINO API` section in the [IoT Cloud things dashobard](https://create.arduino.cc/iot/things):
+You can generate Arduino IoT Cloud Client Credentials in the `ARDUINO API` section in the [IoT Cloud things section](https://create.arduino.cc/iot/things):
 
 ### Step 1
 
@@ -45,4 +43,4 @@ You can generate Arduino IoT Cloud Client Credentials in the `ARDUINO API` secti
 
 ### Step 3
 
-![IoT Cloud Site](https://github.com/arduino/iot-client-js/blob/master/img/selection_3.png?raw=true)
+![IoT Cloud Site](https://github.com/arduino/iot-client-js/blob/master/img/selection_3.png?raw=true)

client_test.go

@@ -96,7 +96,7 @@ func TestMain(m *testing.M) {
 	// Create an instance of the iot-api Go client, we pass an empty config
 	// because defaults are ok
 	client = NewAPIClient(NewConfiguration())
-
+	cleanup()
 	code := m.Run()
 	cleanup()
 	// call flag.Parse() here if TestMain uses flags
@@ -295,7 +295,7 @@ func TestProperties(t *testing.T) {
 	assert.NoError(t, err, "No errors publishing property")
 
 	// Wait for data pipeline ingest the last value
-	time.Sleep(5 * time.Second)
+	time.Sleep(10 * time.Second)
 
 	// Get Last value
 	property, _, err = client.PropertiesV2Api.PropertiesV2Show(ctx, thing.Id, property.Id, nil)