Update README

Author: SamJakob

README.md

@@ -1,5 +1,5 @@
 # SpiGUI
-A comprehensive inventory menu API for Spigot with pages support. Supports Bukkit/Spigot 1.7 - 1.19 (see [Version Notes](#version-notes)).
+A comprehensive inventory menu API for Spigot with pages support. Supports Bukkit/Spigot 1.7 - 1.20 (see [Version Notes](#version-notes)) (Future versions ought to work just fine too!).
 <p>
   <a target="_blank" href="https://github.com/SamJakob/SpiGUI/blob/master/LICENSE">
     <img alt="License" src="https://img.shields.io/github/license/SamJakob/SpiGUI?style=for-the-badge">
@@ -32,12 +32,52 @@ A comprehensive inventory menu API for Spigot with pages support. Supports Bukki
 > _**IMPORTANT!**_ If you have an opinion on how backwards compatibility should be achieved with new versions, please
 > feel free to [drop a reply to this open discussion](https://github.com/SamJakob/SpiGUI/issues/21).
 
-- I don't see a reason it shouldn't work in Spigot 1.7 or any version of Bukkit from 1.8 - 1.19 but it hasn't been tested on each individual version.
-- This library has been tested on Spigot 1.8, Spigot 1.16 and PaperSpigot 1.19 and is expected to work on every versions in-between for most, if not all, forks of Spigot.
-- The [ItemBuilder](https://github.com/SamJakob/SpiGUI/blob/master/src/main/java/com/samjakob/spigui/item/ItemBuilder.java) API does require that `api-version` be `"legacy"` (or not specified) for Spigot versions after 1.13.
+- I don't see a reason it shouldn't work in Spigot 1.7 or any version of Bukkit from 1.8 - 1.20 but it hasn't been tested on each individual version.
+- This library has been tested on Spigot 1.8, Spigot 1.16, PaperSpigot 1.19, Spigot 1.20 and is expected to work on every versions in-between for most, if not all, forks of Spigot.
+- The [ItemBuilder](https://github.com/SamJakob/SpiGUI/blob/master/src/main/java/com/samjakob/spigui/item/ItemBuilder.java) API should work for all versions of Bukkit/Spigot unless you use the `ItemDataColor` (or `data` value) which relies on pre-1.13 item data values. (Though you can just use the relevant `Material` instead - e.g., instead of using `Material.WOOL` and `ItemDataColor.BLUE`, just use `Material.BLUE_WOOL`.)
 
 <br>
 
+## Installation
+
+You can very easily install SpiGUI using [JitPack](https://jitpack.io/#com.samjakob/SpiGUI).
+(The JitPack page contains instructions for Gradle, Maven, sbt, etc.)
+
+Gradle users; just add the following to your `build.gradle` file:
+```groovy
+repositories {
+    // ...
+    
+    maven { url 'https://jitpack.io' }
+}
+
+dependencies {
+    // ...
+    
+    implementation 'com.samjakob:SpiGUI:<insert latest version here>'
+}
+```
+
+<br>
+
+For distribution, you can just shade the library into your plugin JAR. On
+Gradle, this can be done by adding the following to the end of your
+`build.gradle`:
+
+```groovy
+jar {
+    duplicatesStrategy(DuplicatesStrategy.EXCLUDE)
+
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+}
+```
+
+If you aren't using a build system, you can just download the latest JAR and
+add it to your project's classpath (just make sure the SpiGUI classes are
+included in your JAR when you build it).
+
 ## Quick Start
 
 **Step 1: Create an instance of the SpiGUI library in your plugin**

build.gradle

@@ -4,7 +4,7 @@ plugins {
 }
 
 group 'com.samjakob'
-version '1.3.1-SNAPSHOT'
+version '1.3.1'
 uri "https://github.com/SamJakob/SpiGUI"
 
 java {