Usage/install instructions

README.md

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 Used to detect and analyse intersections (position and angle), find the distance between segments and from points to segments, and reduce a collection of lines by similarity. Intended for use in applications such as simplification of computer vision results (e.g. Hough Lines detected in an image), or in basic game development checking for polygon or bounding box intersections and/or proximity.
+
+## Usage
+Install via pip, using `python3 -m pip install --upgrade edgy-lines`.
+
+To import Edge class, use `from edgy_lines.Edge2 import Edge`.