Update README.md

README.md

@@ -2,9 +2,47 @@
 
 Visualizer for knitout files, javascript files that print knitout with `console.log`, and javascript files that output knitout using knitout-frontend-js. Includes code editing support so you can edit-and-test within the interface.
 
+<table>
+<tr><td><a href="#installation">Installation</a></td><td><a href="#usage">Usage</a></td><td><a href="#troubleshooting">Troubleshooting</a></td></tr>
+</table>
+
+## <a name="installation"></a>Installation
+
+In the command line, type:
+```console
+git clone https://github.com/textiles-lab/knitout-live-visualizer
+```
+Next, change into the working directory by typing:
+```console
+cd knitout-live-visualizer
+```
+(*note: if you installed the repo in a subdirectory, make sure to type out the full path.*)
+
+If you have trouble opening the file, you likely need to run the following commands:
+```console
+git submodule init
+git submodule update
+```
+^*These commands initialize and update the submodules (other Git repos) that the visualizer depends on.*
+
+See the github documentation on [cloning a repository](https://docs.github.com/en/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/cloning-a-repository) if you need assistance with installation.
+
+## <a name="usage"></a>Usage
+
+From the 'knitout-live-visualizer' folder on your computer, open the visualizer.html file in a browser.
+
+Click the 'Load a knitout or js file' button to open a local file.
+
+Once a file is loaded, you can add/delete lines of code (with live error checking/support), and update the visualizer by pressing the 'Run/Show' button. The 'Reload' button will discard those edits and restore the file to its original state. (*note: editing the file in the visualizer will not make alterations to the local file.*)
+
+If using a javascript file, you can check the 'Show Knitout' box for a preview of the output knitout, or press 'Save Knitout' to download the file to your computer.
+
 Highlighting a line of source code highlights the stitches made by that line.
-Clicking a stitch should take you to the line of code that made that stitch (but this doesn't appear to be working at the moment).
+Clicking a stitch should take you to the line of code that made that stitch.
+
+`visualizer.html` is the does-everything visualizer.
 
-`visualizer.html` is the does-everything visualizer
+`simplified-visualizer.html` only handles knitout files and doesn't have a code editor.
 
-`simplified-visualizer.html` only handles knitout files and doesn't have a code editor
+## <a name="troubleshooting"></a>Troubleshooting
+If you have any trouble, discover a bug, or want to provide feedback, feel free to use the [Issues](https://github.com/textiles-lab/knitout-live-visualizer/issues) page.\