Initial documentation package for ACCESS-AM3

[bschroeter]

Create the initial documentation package for ACCESS-AM3 in a similar fashion to ACCESS-rAM3.

[bschroeter]

Initial hive docs documentation. Requires input on key points, denoted by TODOs in the text. Further work and discussion next week.

[Whyborn]

This is being addressed with PR #1058

[paigem]

Closing, as this is a duplicate of issue #1039