update readme about embedded node

README.md

@@ -27,7 +27,7 @@ cd SilentDragon
 qmake silentdragon.pro CONFIG+=debug
 make -j$(nproc)
 
-./SilentDragon
+./silentdragon
 ```
 
 ### Building on Windows
@@ -60,6 +60,21 @@ make
 ./SilentDragon.app/Contents/MacOS/SilentDragon
 ```
 
+### Emulating the embedded node
+
+In binary releases, SilentDragon will use node binaries in the current directory to sync a node from scratch.
+It does not attempt to download them, it bundles them. To simulate this from a developer setup, you can symlink
+these four files in your Git repo:
+
+```
+    ln -s ../hush3/src/hushd
+    ln -s ../hush3/src/hush-cli
+    ln -s ../hush3/src/komodod
+    ln -s ../hush3/src/komodo-cli
+```
+
+The above assumes silentdragon and hush3 git repos are in the same directory. File names on Windows will need to be tweaked.
+
 ### Support
 
 For support or other questions, Join [Discord](https://myhush.org/discord), or tweet at [@MyHushTeam](https://twitter.com/MyHushTeam) or [file an issue](https://github.com/MyHush/SilentDragon/issues).