improve workflow

README.md

@@ -6,7 +6,7 @@ To install `package.json` dependencies in a way where the native
 modules are built with `electron`, run:
 
 ```bash
-$ ./install.sh
+$ ./scripts/install.sh
 ```
 
 Then, you want to make sure `app/dist` is populated. I recommend
@@ -26,15 +26,3 @@ $ npm start
 ```
 
 ...to launch the app!
-
-## Common Errors
-
-### `Error: Module version mismatch. Expected 48, got 47`
-
-If you get this error after `npm start`, simply remove the `node_modules` folder and try to install again using following command:
-
-```
-sudo ./install.sh
-```
-
-More details: https://github.com/zeit/hyperterm/issues/72

session.js

@@ -1,8 +1,19 @@
 const { EventEmitter } = require('events');
-const { spawn } = require('child_pty');
 const { exec } = require('child_process');
 const defaultShell = require('default-shell');
 
+let spawn;
+try {
+  spawn = require('child_pty').spawn;
+} catch (err) {
+  console.error(
+    'A native module failed to load. Typically this means ' +
+    'you installed the modules incorrectly.\n Use `scripts/install.sh` ' +
+    'to trigger the installation.\n ' +
+    'More information: https://github.com/zeit/hyperterm/issues/72'
+  );
+}
+
 const TITLE_POLL_INTERVAL = 500;
 
 module.exports = class Session extends EventEmitter {