[fix] README.md

Author: parpa

README.md

@@ -13,7 +13,7 @@ This example code demonstrates how to use AWS Cognito with AWS Go SDK in a form
 3. Verify user's phone
 4. Login with username or refresh token
 
-In order this solution to work, you need to have AWS credentials configured (file `.aws/configuration` exists) and User Pool created in AWS Console. You have to disable "Remember device" and enable "Sms second-factor" on authentication tab.
+In order this solution to work, you need create User Pool in AWS Console. You have to disable "Remember device" and enable "Sms second-factor" on authentication tab.
 
 When the app client is created, in it's settings select "Enable username-password (non-SRP) flow for app-based authentication (USER_PASSWORD_AUTH)".
 
@@ -31,13 +31,24 @@ go build -o ./build/cognito
 Without client secret:
 
 ```go
-AWS_PROFILE=XXX COGNITO_APP_CLIENT_ID=XXX COGNITO_USER_POOL_ID=XXX PORT=8080 ./build/cognito
+AWS_REGION=XXX COGNITO_APP_CLIENT_ID=XXX COGNITO_USER_POOL_ID=XXX PORT=8080 ./build/cognito
 ```
 
 With client secret:
 
 ```go
-AWS_PROFILE=XXX COGNITO_APP_CLIENT_ID=XXX COGNITO_APP_CLIENT_SECRET=XXX  COGNITO_USER_POOL_ID=XXX PORT=8080 ./build/cognito
+AWS_REGION=XXX COGNITO_APP_CLIENT_ID=XXX COGNITO_APP_CLIENT_SECRET=XXX  COGNITO_USER_POOL_ID=XXX PORT=8080 ./build/cognito
+```
+
+## Quick setup (bash)
+
+```sh
+export AWS_REGION=xxxx
+export COGNITO_APP_CLIENT_ID=xxxxx
+export COGNITO_APP_CLIENT_SECRET=xxxxx
+export COGNITO_USER_POOL_ID=xxxxx
+export PORT=8080
+go run main.go
 ```
 
 It's worth noting that in production environment you should not pass client secrets this way because with adequate permissions it's possible to read environmental variables of a running process. Also if you call a command that way, secret hash will be stored in your shell history. You should keep those issues in mind and mitigate them in your enviroment.