beremiz

Doc: Add about section (PR #33)

2024-04-26, Nadim Khan
ac6408084c60
Doc: Add about section (PR #33)

* added about section

* updated .gitignore to exclude doc/_build/
Widget syntax
=============
.. highlight:: text
HMI elements are SVG elements whose labels start with ``HMI:``::
HMI:WidgetType[|freq][[:param]...][[@a=path[,min][,max]]...][#expression]
Widget Type
-----------
Update Frequency
----------------
Parameters
----------
Variable bindings
-----------------
Enable expression
-----------------