Doc: fix dev instructions; add more screenshots.

Author: teesloane

README.md

@@ -1,21 +1,28 @@
 Trunk is an early prototype of a tool for learning new languages. It
 is inspired by [Learning With Texts](https://learningwithtexts.com/).
 
-![](./docs/screenshots/trunk_1_phrase.png)
+![](./docs/screenshots/trunk_word.png)
+
+View more screenshots [here](./docs/screenshots).
 
 ⚠️ Trunk is currently under development and is not recommended for personal use.
 With that said, it currently works as so:
 
 1. Download the [latest release](https://github.com/theiceshelf/trunk/releases) for your platform.
-2. Find and create an article to practice reading (preferrably something short!).
+2. Find and create an article to practice reading (preferrably something short).
 3. Read the article while marking the familiarity of works and adding translations.
 
 ### Development
 
+Requirements:
+
+- Node JS 14+ + Yarn.
+- Java runtime (for clojurescript compilation)
+
 **Emacs**
 
 1. Clone repo.
-1. run `npm install`
+1. run `yarn install`
 1. Open a clojurescript file (such as main/core.cljs)
 1. Run `m-x cider-jack-in-clojurescript`
 1. Follow the prompts to run a `shadow` repl (and `node-repl`).
@@ -28,7 +35,7 @@ With that said, it currently works as so:
 
 1. Clone repo.
 1. `npm install`
-1. In one terminal run `npm dev-cljs`
+1. In one terminal run `npm run dev-cljs`
 1. Open your build running on `http://localhost:9630/dashboard`
 1. Navigate to "Builds"
 1. Press `Watch` button for `main` and `renderer` builds.