update references to Bluemix
Bluemix is now "IBM Cloud" - I created an account with IBM Cloud on the first prompt, then a couple of pages later was prompted to create a Bluemix account. Following the link takes the user to the IBM Cloud catalog; several of the apps reference Bluemix but there is no indication that it is the old name for IBM Cloud. I spent several minutes looking for Bluemix in the IBM Cloud catalog. I finally Googled Bluemix and understood that I already had it.