Summary
LuAshitacast is an addon that allows you to swap your equipment automatically and dynamically by using a lua-based profile.
Your profile will return a table with functions as entries, and LuAshitacast will call the functions at appropriate times to swap your equipment.
The following reference material should have been provided with your download:
Quick Start - A step by step guide to building a basic profile, with examples of how to accomplish many common tasks.
gData - Documentation on the global gData table, which provides easy access to common data elements you may want for conditional swaps
gFunc - Documentation on the global gFunc table, which provides functions to interface with LuAshitacast from inside your profile
gSettings - Documentation on the global gSettings table, which contains settings to alter LuAshitacast behavior.
Commands - Documentation on commands which can be typed ingame to utilize LuAshitacast
Profile - Documentation on your profile layout and the table entries that are reserved by LuAshitacast.