Create README.md

Author: MairwunNx

README.md

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+## ✨ Project Essentials: CoreAPI
+
+[![](https://jitpack.io/v/projectessentials/ProjectEssentials-Core.svg)](https://jitpack.io/#projectessentials/ProjectEssentials-Core)
+![GitHub](https://img.shields.io/github/license/ProjectEssentials/ProjectEssentials-Core)
+
+> ## CoreAPI for Project Essentials mods.
+
+#### ❗ Compatibility with forge `28.0.X` version.
+
+## 🧐 Install using Gradle:
+> ##### If your project uses Gradle as Build Tool, then use the code below to add dependencies:
+
+```groovy
+repositories {
+    maven { url("https://jitpack.io") }
+}
+
+dependencies {
+    compile(
+        group: "com.github.projectessentials",
+        name: "ProjectEssentials-Core",
+        version: "v1.14.4-1.0.0.0"
+    )
+}
+```
+
+## 🤔 Install using Maven:
+> ##### If your project uses Maven as Build Tool, then use the code below to add dependencies:
+
+```xml
+<repositories>
+    <repository>
+        <id>jitpack.io</id>
+        <url>https://jitpack.io</url>
+    </repository>
+</repositories>
+
+<dependency>
+	<groupId>com.github.projectessentials</groupId>
+	<artifactId>ProjectEssentials-Core</artifactId>
+	<version>v1.14.4-1.0.0.0</version>
+</dependency>
+```
+
+```
+Additional information:
+    - kotlin-std lib version: 1.3.50
+    - kotlinx serialization version: 0.12.0
+    - target jvm version: 1.8
+```
+
+### After you got the dependencies and the library itself:
+
+# [getting started with read the documentation](./documentation/in-using.md)
+
+> ## Made with 💕 by [MairwunNx](https://mairwunnx.github.io/)