Started some overview documentation of the HaaS.

For a very generous definition of "started." The intent is for this to
become something a new developer can read to get up to speed quickly.
README: linked to overview.
More work on overview docs
Fancy ascii art diagram

Will write some prose to go with this soon.

Also hard-wrapped some of the text; this makes things easier in offline
text editors.
Fixed a typo.
Wrote about how the network is set up by the HaaS
Merge branch 'devel' into overview-docs
Merge branch 'devel' into overview-docs

Conflicts:
	README.md
Merge pull request #37 from CCI-MOC/overview-docs

Overview docs