Update README.md (#198)

README.md

@@ -53,7 +53,12 @@ circleci update
 circleci switch
 ```
 
-This command may prompt you for `sudo` if your user doesn't have write permissions to the install directory, `/usr/local/bin`.
+This command may require `sudo` if your user doesn't have write permissions to the install directory, `/usr/local/bin`. Otherwise, you may see the following error:
+
+```
+mv: cannot move 'circleci' to '/usr/local/bin/circleci': Permission denied
+```
+
 
 ### Updating after install
 
@@ -70,6 +75,20 @@ You may first need to generate a CircleCI API Token from the [Personal API Token
 ```
 $ circleci setup
 ```
+You should be prompted to enter the _CircleCI API Token_ you generated from Personal API Token tab](https://circleci.com/account/api)
+
+```
+✔ CircleCI API Token: 
+
+API token has been set.
+
+✔ CircleCI Host: https://circleci.com
+
+CircleCI host has been set.
+
+Setup complete. Your configuration has been saved.
+```
+
 
 If you are using this tool on `circleci.com`. accept the provided default `CircleCI Host`.
 
@@ -84,9 +103,11 @@ To ensure that the tool is installed, you can use it to validate a build config
 
 ```
 $ circleci config validate
+
 Config file at .circleci/config.yml is valid
 ```
 
+
 ## Docker
 
 The CLI may also be used without installation by using Docker.