README: features, screenshots table, building instructions

Author: phlaster

README.md

@@ -1,20 +1,24 @@
 # speedreader
-Simple html-based text quick reading tool.
+Simple html-based offline quick reading tool.
+## features
+* Chose light or dark theme
+* Load your `.txt` file
+* Play, pause, rewind 10 words back or replay the whole document
+* Enable pauses on punctuation symbols
+* Track your position in a document with a progress bar
+* Have a per-document summary as you hit the end.
 
-<div style="display: flex; justify-content: space-between;">
+## screenshots
+<table align='center'>
+<t0>
+  <td><img src="assets/im1.png" height: auto></td>
+  <td><img src="assets/im2.png" height: auto></td>
+  <td><img src="assets/im3.png" height: auto></td>
+</tr>
+</table>
 
-  <div style="margin: 5px;">
-    <img src="assets/im1.png" alt="Screenshot 1" style="max-width: 30%; height: auto;">
-  </div>
-
-  <div style="margin: 5px;">
-    <img src="assets/im2.png" alt="Screenshot 2" style="max-width: 30%; height: auto;">
-  </div>
-
-  <div style="margin: 5px;">
-    <img src="assets/im3.png" alt="Screenshot 3" style="max-width: 30%; height: auto;">
-  </div>
-
-</div>
-
-Works entirely in browser and 100% offline.
+## building
+```sh
+./build.js
+```
+`speedreader.html` file will be created in `dist/` directory.