OMVS Segment Required

It seems that an [OMVS segment](https://www.ibm.com/support/knowledgecenter/SSLTBW_2.4.0/com.ibm.zos.v2r4.halz002/ip_requirement_for_omvs_segment.htm) is required to use an API based on this repo.   Perhaps the setup and requirements for this should be added to existing documentation.  