chore: update readme (#4)

README.md

@@ -1,5 +1,77 @@
-# abctl
+<p align="center">
+    <img alt="abctl logo" src="https://avatars.githubusercontent.com/u/59758427?size=200" height="140" />
+    <h3 align="center">abctl</h3>
+    <p align="center">Airbyte command line tool for running Airbyte locally.</p>
+</p>
+
+---
 
 ## Getting Started
 
-## FAQs
+### Prerequisites
+1. `Docker Desktop` installed (see [instructions](https://docs.docker.com/desktop/install/mac-install/))
+2. `Kubernetes` enabled (see [instructions](https://docs.docker.com/desktop/kubernetes/))
+
+### Installation
+Do one of the following:
+- Download the latest version of `abctl` from the [releases page](https://github.com/airbytehq/abctl/releases)
+- Install `abctl` using `go install`
+   ```shell
+   go install github.com/airbytehq/abctl@latest
+   ```
+
+### Launch
+To launch Airbyte locally with the default settings, simply run
+```shell
+abctl local install 
+```
+
+After the `local install` command completes successfully, your browser should have launched and 
+redirected you to http://localhost.  You will need to provide credentials in order to access 
+Airbyte locally, which default to the username `airbyte` and the password `password`.
+
+These credentials can be changed either of the following 
+- passing the `--username` and `--password` flags to the `local install` command
+   ```shell
+   abctl local install --username foo --password bar
+   ```
+- defining the environment variables `ABCTL_LOCAL_INSTALL_USERNAME` and `ABCTL_LOCAL_INSTALL_PASSWORD`
+   ```shell
+   ABCTL_LOCAL_INSTALL_USERNAME=foo
+   ABCTL_LOCAL_INSTALL_PASSWORD=bar
+   abc local install
+   ```
+
+### Additional Options
+For additional options supported by `abctl`, pass the `--help` flag
+```shell
+abctl --help
+
+Usage:
+  abctl [command]
+
+Available Commands:
+  help        Help about any command
+  local       Manages local Airbyte installations
+  version     Print the version number
+
+Flags:
+      --dnt    opt out of telemetry data collection
+  -h, --help   help for abctl
+```
+```shell
+abctl local install --help
+
+Usage:
+
+  abctl local install [flags]
+
+Flags:
+  -h, --help              help for install
+  -p, --password string   basic auth password, can also be specified via ABCTL_LOCAL_INSTALL_PASSWORD (default "password")
+  -u, --username string   basic auth username, can also be specified via ABCTL_LOCAL_INSTALL_USERNAME (default "airbyte")
+
+Global Flags:
+      --dnt   opt out of telemetry data collection
+
+```