[v2] Docs update

(cherry picked from commit 589eb3864f)

website/docs/gettingstarted/_category_.json

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+{
+  "label": "Getting Started",
+  "position": 10
+}

website/docs/gettingstarted/building.mdx

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+---
+sidebar_position: 6
+---
+
+# Compiling your Project
+
+From the project directory, run `wails build`.
+This will compile your project and save the production-ready binary in the `build/bin` directory.
+
+If you run the binary, you should see the default application:
+
+<div class="text--center">
+    <img src="/img/defaultproject.png" width="50%" style={{"box-shadow": "rgb(255 255 255 / 20%) 0px 4px 8px 0px, rgb(104 104 104) 0px 6px 20px 0px"}}/>
+</div>
+<br/>
+
+
+For more details on compilation options, please refer to the [CLI Reference](/docs/reference/cli#build).
+

website/docs/gettingstarted/development.mdx

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+---
+sidebar_position: 5
+---
+
+# Developing your Application
+
+You can run your application in development mode by running `wails dev` from your project directory. This will do the following things:
+
+  - Build your application and run it
+  - Watch for modifications in your Go files and rebuild/re-run on change
+  - Sets up a [webserver](http://localhost:34115) that will serve your application over a browser. This allows you to use your favourite browser extensions. You can even call your Go code from the console.
+
+To get started, run `wails dev` in the project directory. More information on this can be found [here](/docs/reference/cli#dev).
+
+Coming soon: Tutorial

website/docs/gettingstarted/firstproject.mdx

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+---
+sidebar_position: 2
+---
+
+# Creating a Project
+
+## Project Generation
+
+Now that the CLI is installed, you can generate a new project by using the `wails init` command.
+
+To get up and running quickly, you can generate a default project by running `wails init -n myproject`. This will
+create a directory called `myproject` and populate it with the default template.
+
+Other project templates are available and can be listed using `wails init -l`.
+
+To see the other options available, you can run `wails init -help`.
+More details can be found in the [CLI Reference](/docs/reference/cli#init).
+
+## Project Layout
+
+Wails projects have the following layout:
+
+```
+.
+├── build/
+│   ├── appicon.png
+│   ├── darwin/
+│   └── windows/
+├── frontend/
+├── go.mod
+├── go.sum
+├── main.go
+└── wails.json
+```
+
+### Project structure rundown
+
+- `/main.go` - The main application
+- `/frontend/` - Frontend project files
+- `/build/` - Project build directory
+  - `/build/appicon.png` - The application icon
+  - `/build/darwin/` - Mac specific project files
+  - `/build/windows/` - Windows specific project files
+- `/wails.json` - The project configuration
+- `/go.mod` - Go module file
+- `/go.sum` - Go module checksum file
+
+The `frontend` directory has nothing specific to Wails and can be any frontend project of your choosing.
+
+The `build` directory is used during the build process. These files may be updated to customise your builds. If
+files are removed from the build directory, default versions will be regenerated.
+
+The default module name in `go.mod` is "changeme". You should change this to something more appropriate.

website/docs/gettingstarted/installation.mdx

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+---
+sidebar_position: 1
+---
+
+# Installation
+
+## Supported Platforms
+
+ - Windows 10
+ - MacOS x64 & arm64 (due October '21)
+ - Linux (due December '21)
+
+## Dependencies
+
+Wails has a number of common dependencies that are required before installation:
+
+  - Go 1.17+
+  - npm (Node 14+)
+
+### Go
+
+Download Go from the [Go Downloads Page](https://golang.org/dl/).
+
+Ensure that you follow the official [Go installation instructions](https://golang.org/doc/install#install). You will also need to ensure that your `PATH` environment variable also includes the path to your `~/go/bin` directory. Restart your terminal and do the following checks:
+
+ * Check Go is installed correctly: `go version`
+ * Check "~/go/bin" is in your PATH variable: `echo $PATH | grep go/bin`
+
+### npm
+
+Download NPM from the [Node Downloads Page](https://nodejs.org/en/download/). It is best to use the latest release as that is what we generally test against.
+
+Run `npm --version` to verify.
+
+## Platform Specific Dependencies
+
+You will also need to install platform specific dependencies:
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+<Tabs
+  defaultValue="Windows"
+  values={[
+    {label: 'Windows', value: 'Windows'},
+    {label: 'MacOS', value: 'MacOS'},
+    {label: 'Linux', value: 'Linux'},
+  ]}>
+  <TabItem value="MacOS">
+    Coming Soon...
+  </TabItem>
+  <TabItem value="Windows">
+      Wails requires that the <a href='https://developer.microsoft.com/en-us/microsoft-edge/webview2/'>WebView2</a> runtime is installed.
+      Some Windows installations will already have this installed. You can check using the `wails doctor` command (see below).
+  </TabItem>
+  <TabItem value="Linux">
+    Coming Soon...
+  </TabItem>
+</Tabs>
+
+## Optional Dependencies
+
+  - [UPX](https://upx.github.io/) for compressing your applications.
+
+## Installing Wails
+
+Run `go get github.com/wailsapp/wails/v2/cmd/wails` to install the Wails CLI.
+
+## System Check
+
+Running `wails doctor` will check if you have the correct dependencies installed. If not, it will advise on what is missing and help on how to rectify any problems.