Add readme and license

Author: andyjsmith

LICENSE

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+MIT License
+
+Copyright (c) 2025 Andy Smith
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# StringSpy
+
+![GitHub Release](https://img.shields.io/github/v/release/andyjsmith/String-Spy)
+[![Build](https://github.com/andyjsmith/String-Spy/actions/workflows/build.yml/badge.svg)](https://github.com/andyjsmith/String-Spy/actions/workflows/build.yml)
+
+**StringSpy** is cross-platform GUI tool for finding strings in binary data, similar to the GNU command-line `strings` program. StringSpy supports finding strings in multiple encodings (e.g. Unicode), filtering results using regex, and exporting results.
+
+## Download
+[Download the latest release](releases/latest)
+
+## Screenshots
+
+![Main window](screenshots/mainwindow.png)
+
+![Inspect string dialog](screenshots/inspectstring.png)