Update README.md

update readme

Author: cxxsheng

README.md

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 # SecurePatchedEmulator
+SecurePatchedEmulator provides a prebuilt Android emulator image with the latest security patches, enabling security researchers to easily access a secure, reliable, and up-to-date Android environment for testing and development purposes. Before using SecurePatchedEmulator, ensure that you have the latest version of the Android SDK Platform-Tools and Android Emulator installed.
+
+
+
+### Downloads
+
+|  Version  | Security Patch |                        Download Link                         |
+| :-------: | :------------: | :----------------------------------------------------------: |
+| 14.0.0_r1 |    2024-06     | [android-14.0.0_r1.zip](https://github.com/cxxsheng/SecurePatchedEmulator/releases/download/2024-06/android-14.0.0_r1.zip) |
+
+### Usage
+To set up and launch the SecurePatchedEmulator, follow these steps:
+1. Download the desired Android emulator image. For example, to launch android-14.0.0_r1:
+
+   ```shell
+   wget https://github.com/cxxsheng/SecurePatchedEmulator/releases/download/2024-06/android-14.0.0_r1.zip
+   ```
+
+2. Extract the downloaded zip file to the desired output directory:
+
+   ```shell
+   unzip android-14.0.0_r1.zip -d /path/to/emulator/
+   ```
+
+   Replace `/path/to/emulator` with the actual path where you want to extract the emulator files.
+
+3. Launch the emulator, specifying the path to the extracted emulator directory and the desired AVD name:
+
+   ```shell
+   emulator @YourAVDName -sysdir /path/to/emulator/x86_64
+   ```
+
+   Replace `YourAVDName` with the name of your Android Virtual Device (AVD) and `/path/to/emulator` with the actual path where you extracted the emulator files.