Adds getting started installation instructions (#133)

* Adds getting started installation instructions

Author: Conor Okus

docs/.vuepress/config.js

@@ -89,6 +89,7 @@ const tutorialSidebar = [
     title: 'Tutorials',
     collapsable: false,
     children: [
+      '/tutorials/getting-started',
       '/tutorials/build_a_node_in_java',
       '/tutorials/build_a_node_in_rust'
     ],
@@ -146,7 +147,7 @@ module.exports = {
       },
       {
         text: 'Tutorials',
-        link: '/tutorials/build_a_node_in_java'
+        link: '/tutorials/getting-started'
       },
       {
         text: 'Blog',

docs/tutorials/getting-started.md

@@ -0,0 +1,118 @@
+# Getting started
+
+Welcome to the Lightning Development Kit documentation!
+
+If you have any questions about anything related to LDK, feel free to ask our community on [GitHub Discussions](https://github.com/orgs/lightningdevkit/discussions) or join us on [Discord](https://discord.gg/5AcknnMfBw). 
+
+## System Requirements
+MacOS, Windows and Linux are supported.
+## Installation
+To add LDK to a project, run:
+
+<CodeSwitcher :languages="{rust:'Rust', java:'Java', kotlin:'Kotlin', javascript:'JavaScript'}">
+  <template v-slot:rust>
+ 
+  ```toml
+    # Add the following dependencies to your cargo.toml and replace {VERSION} with the version number you want to use.
+
+    [dependencies]
+    lightning = { version = {VERSION}, features = ["max_level_trace"] }
+    lightning-block-sync = { version = {VERSION}, features = [ "rpc-client" ] }
+    lightning-invoice = { version = {VERSION} }
+    lightning-net-tokio = { version = {VERSION} }
+    lightning-persister = { version = {VERSION} }
+    lightning-background-processor = { version = {VERSION} }
+    lightning-rapid-gossip-sync = { version = {VERSION} }
+  ```
+
+  </template>
+  <template v-slot:java>
+ 
+  ```xml
+  <!--
+  For Maven, add the following dependency to your POM and replace {VERSION} with the 
+  version number you want to use.
+  -->
+
+  <dependency>
+   <groupId>org.lightningdevkit</groupId>
+   <artifactId>ldk-java</artifactId>
+  <version>{VERSION}</version>
+  </dependency>
+  ```
+
+  ```kotlin
+  /* 
+  For Gradle, add the following dependency to your build.gradle and replace {VERSION} with
+  the version number you want to use.
+  */ 
+
+  dependencies {
+   // ...
+    implementation 'org.lightningdevkit:ldk-java:{VERSION}'
+   // ...
+  }
+  ```
+
+  </template>
+  <template v-slot:kotlin>
+
+  ```kotlin
+  /* To include the LDK Kotlin bindings in an Android project download the latest binary from https://github.com/lightningdevkit/ldk-garbagecollected/releases and place it in your libs directory.
+  Then add to your build.gradle file:
+  */
+
+  dependencies {
+      // ...
+      implementation fileTree(include: ['*.aar'], dir: 'libs')
+      // ...
+  }
+  ```
+
+  </template>
+  <template v-slot:javascript>
+
+  ```javascript
+    npm i lightningdevkit --save
+  ```
+
+  </template>
+</CodeSwitcher>
+
+Example usage after installation is complete:
+
+<CodeSwitcher :languages="{rust:'Rust', java:'Java', kotlin:'Kotlin', javascript:'JavaScript'}">
+  <template v-slot:rust>
+
+  ```rust
+  use lightning::chain::chaininterface::FeeEstimator;
+  ```
+
+  </template>
+  <template v-slot:java>
+  
+  ```java
+  import org.ldk.structs.FeeEstimator
+  ```
+
+  </template> 
+  <template v-slot:kotlin>
+
+  ```kotlin
+  import org.ldk.structs.FeeEstimator
+  ```
+
+  </template>
+  <template v-slot:javascript>
+
+  ```javascript
+  import { FeeEstimator } from "lightningdevkit";
+  import * as fs from "fs";
+  import { strict as assert } from "assert";
+  
+  const wasm_file = fs.readFileSync("node_modules/lightningdevkit/liblightningjs.wasm");
+  await ldk.initializeWasmFromBinary(wasm_file);
+  ```
+
+  </template>
+</CodeSwitcher>