A more presentable README

README.md

@@ -1,9 +1,29 @@
 # dn
 **D**ocker powered **N**ode.js version manager
 
+## What?
+A version manager for Node.js which uses docker containers for isolation.
+
+## Why?
+- I want to run and build Node.js apps in complete isolation and I don't want to explicitly invoke docker for every little thing.
+- I wanted to see what it takes to build batteries-included well documented cli application in bash (this still has some way to go but I think I've done pretty well so far.)
+
 ## Getting started
+- [Install Docker](https://docs.docker.com/desktop/#download-and-install)
 - Clone this repo
-- Invoke `./dn.sh -h` to get started.
+- Install the script `./dn.sh install`
+- Run `dn --help` and take it from there
+
+## Inspiration
+- [tj/n](https://github.com/tj/n)
+- [jenv](https://github.com/jenv/jenv)
+- Docker
+
+## Compared with n
+Whenever you switch node versions in `n`, it removes the previous version and installs the new one on your machine. `dn` does not touch your existing node installation. Instead, it pulls the official node alpine docker images and runs your commands in containers.
 
 ## Limitations
-Currently limited to whatever comes with `node:X-alpine` docker image. So, if you have a fancy build process which requires special dependencies then this manager cannot support it yet.
+- Currently limited to whatever comes with `node:X-alpine` docker image. So, if you have a fancy build process which requires special dependencies then this manager cannot support it yet.
+- Performance, especially start up, can be a bit slower since we're running in Docker.
+- No terminal tab completion yet.
+- Tested on Ubuntu, Mac, bash and zsh only.