use ibmcloud commands instead of cf

[ejodet]

Hello, feedback from an external user.

the readme states to use cf commands, whereas ibmcloud cli should be used.

A faster path to successful deployment could be: 1 - go to https://cloud.ibm.com/ 2 - Create app 3 - BYOC 4 - paste the repos URL 5 -> create

Or add the Create toolchain button - more simple