NXBOOK-794 shell doc creation. Find-replace. Based on nom do.
CLMNXBOOK-794
NXBOOK-794 added config for gem deployment.
NXBOOK-794 added images.
NXBOOK-794 added book chapter and tidied content.
NXBOOK-794 tidied and corrected content for first draft.
Merge remote-tracking branch 'origin/NXBOOK-794'

Conflicts:
	book-nexus.asciidoc