change model name & write readme

README.md

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-# EasyOCR-CPP
+# EasyOCR-CPP
+
+A C++ implementation of EasyOCR using ONNXRuntime.
+
+## Library Needed
+
+- OpenCV 4.10
+- ONNXRuntime 1.19.2
+- NVIDIA CUDA 11.7 (Optional)
+
+## C++ Version
+
+C++17 or above.
+
+## Build
+
+Using Visual Studio 2022 or later, open the `EasyOCR-CPP.sln` file and build the `EasyOCR-CPP` project.
+
+## Model Info
+
+### Detection Model
+
+Detection model can handle all kinds of language that EasyOCR can recognize.
+
+### Recognition Model
+
+Recognition model is different for each language. In this project, the `English` and `English+Chinese` model are provided.
+
+## Usage
+
+See `EasyOCR-CPP/EasyOCR-CPP.cpp` for an example usage.
+
+## Todo
+
+Provide A modified version of EasyOCR that can export any recognition model to ONNX format easily.
+
+## Other Informations
+
+EasyOCR Library: https://github.com/JaidedAI/EasyOCR
+ONNX Model Export Guide: https://github.com/JaidedAI/EasyOCR/issues/746