Added readme and license

Author: ServerDeveloper9447

NOTICE

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+Copyright 2025 Soumalya Ghosh
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

readme.md

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+# Captr
+
+**Captr** is a lightweight screen capturing and recording tool written in Go. It's designed for speed, simplicity, and minimal resource usage.
+(Windows OS Only)
+
+> **Status:** Beta  
+> Currently supports full-screen and window-specific screenshots. Recording functionality is in development.
+
+## Features
+
+- 📸 Capture full-screen screenshots  
+- 🖼️ Capture specific window screenshots  
+- 🎥 Screen recording (coming soon)
+
+## Installation
+On first run, it auto creates an appdata directory `captr` and puts the config file inside. No separate installation required.
+
+## Usage
+Download the exe from the releases or [build yourself]()<br>
+Run the exe to use it or pass the `--config` flag to open the config file.<br>
+For recording functionaility, you must have `ffmpeg` installed and added to path. If you don't have it, the app has the prebuilt prompt to download ffmpeg to the `%appdata%\captr\bin` folder in appdata to use.
+
+## Roadmap
+- [x] Full-Screen Screenshots
+- [x] Window-Specific Screenshots
+- [ ] Screen Recording
+- [ ] Window Recording
+
+## Build Yourself
+### Prerequisites
+- Golang (>=1.22)
+- Mingw-w64
+
+Run `go build` to build the standalone exe file.
+
+## Contributing
+Contributions are welcome. Open an issue or submit a pr.
+
+## License
+Apache License, Version 2.0