added readme

README.md

+# PyPLAML
+
+An extension for Manim (https://www.manim.community/) supporting class diagrams. Allows creating various types
+of classes (interfaces,
+enums, ...) and relations between them, which can be later animated using Manim interface.
+
+There is also a parser for PlantUML (https://plantuml.com/class-diagram), which can automatically create a diagram from
+provided .puml file.
+
+## Requirements
+
+- ffmpeg, https://ffmpeg.org/download.html
+- graphviz, https://graphviz.org/download
+- (Windows only) Microsoft Visual C++ 14.0 or newer
+
+## Installation
+
+Before installation, make sure ffmpeg and graphviz are included in PATH.
+
+Run in package root (where pyproject.toml is):
+
+```
+pip install .
+```
+
+### Fix for Windows Graphviz "Failed building wheel" error
+
+```
+python -m pip install --use-pep517 `
+              --config-settings="--global-option=build_ext" `
+              --config-settings="--global-option=-IC:\Program Files\Graphviz\include" `
+              --config-settings="--global-option=-LC:\Program Files\Graphviz\lib" `
+              pygraphviz
+```
+
+## Usage
+
+Usage is same as running any other manim scene. To run a scene from examples run:
+
+```commandline
+manim examples/scenes/animals.py -pql
+```
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