Wrong instructions for ibmcloud login

[nkhklkstksch]

I was trying to follow the instructions
in the README.md,
Getting Started section,
and it looks like the email password doesn't work.

Found better login information
in the https://cloud.ibm.com site
by clicking the profile avatar
and then Log into CLI and API.

[steveclay]

@nkhklkstksch are you using a federated ID when you login (and not just user and password)? The instructions on cloud.ibm.com are great and use a passcode based on your existing login as opposed to just logging straight in with user and password. We want to make sure these instructions are helpful, so please respond with just a few more details about your use if you can. Thank you