Write a README.

Author: just-harry

README.md

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+# Allow Store Content From Packages for The Sims™ 3
+
+This is a mod for The Sims™ 3 which makes store content be classified as store content even if it was installed via `.package` files in the `Mods` folder.
+
+## Installation
+
+### Prerequisites
+
+- [MonoPatcher by Lazy Duchess](https://modthesims.info/d/687815) is a hard requirement for this mod to function.
+
+### Step-by-step
+
+1. Download the mod from from [https://github.com/just-harry/allow-store-content-from-packages-for-ts3/releases/download/v1.0.0/allow-store-content-from-packages-for-ts3.zip](https://github.com/just-harry/allow-store-content-from-packages-for-ts3/releases/download/v1.0.0/allow-store-content-from-packages-for-ts3.zip).
+2. Install the mod as usual, by extracting the `.package` file within the `.zip` file into the game's `Mods\Packages` folders.
+
+## Licensing
+
+Allow Store Content From Packages for The Sims™ 3, and its accompanying documentation, is distributed under the [Zero Clause BSD License](https://spdx.org/licenses/0BSD.html).