All: Resolves #163: Added Mermaid support to desktop and mobile

Tools/buildReactNativeInjectedJs.js

@@ -1,3 +1,8 @@
+// React Native WebView cannot load external JS files, however it can load
+// arbitraty JS via the injectedJavaScript property. So we use this to load external
+// files: First here we convert the JS file to a plain string, and that string
+// is then loaded by eg. the Mermaid plugin, and finally injected in the WebView.
+
 const fs = require('fs-extra');
 
 const cwd = process.cwd();