fix(docs): Fix code examples, update E2E test steps (#110)

fix(docs): fix code examples, update E2E test steps

CONTRIBUTING.md

@@ -14,7 +14,7 @@ Please provide the following information with your issue to enable us to respond
 You can run the E2E tests by:
 
 ```sh
-make package # Assemble the latest Pact Go from Ruby and compile Go
+make tools   # Assemble the latest Pact Go from Ruby and compile Go
 make pact    # Run the Pact tests - consumer + provider
 ```
 

README.md

@@ -167,16 +167,20 @@ func TestConsumer(t *testing.T) {
 	// Pass in test case. This is the component that makes the external HTTP call
 	var test = func() (err error) {
 		u := fmt.Sprintf("http://localhost:%d/foobar", pact.Server.Port)
-		req, _ := http.NewRequest("GET", u, strings.NewReader(`{"name":"billy"}`))
+		req, err := http.NewRequest("GET", u, strings.NewReader(`{"name":"billy"}`))
+		if err != nil {
+			return err
+		}
 
 		// NOTE: by default, request bodies are expected to be sent with a Content-Type
 		// of application/json. If you don't explicitly set the content-type, you
 		// will get a mismatch during Verification.
 		req.Header.Set("Content-Type", "application/json")
 		req.Header.Set("Authorization", "Bearer 1234")
 
-		_, err = http.DefaultClient.Do(req); err != nil {
-		return
+		if _, err = http.DefaultClient.Do(req); err != nil {
+			return err
+		}
 	}
 
 	// Set up our expected interactions.