Fix: added build steps to readme and removed ios warning

README.md

@@ -16,10 +16,20 @@ git submodule init
 
 git submodule update
 
+npm install
 # Setup, make a dev build and start a server
 npm start
 ```
 
+If you get an
+```bash
+Error: MDX compilation failed for file "X:\PATHTO\cortexjs.io\docs\mathfield\22-security.md"
+Cause: Cannot read properties of null (reading '1')
+Details:
+TypeError: Cannot read properties of null (reading '1')
+```
+Then go through each of the .md files and save them (CTRL+S) so you are sure the contents is saved to disk. You should be able to build successfully.
+
 ## To update the documentation after a new release
 
 ```bash

docs/mathfield/11-interacting.md

@@ -227,16 +227,8 @@ to be dispatched.
 | `deleteContentForward`|  |
 | `historyUndo`| The content was changed because of an undo command |
 | `historyRedo`| The content was changed because of a redo command |
-
-
 </div>
 
-:::warning
-
-On iOS, the `inputType` property is removed. However, its content can also be access as `ev.data`. Until this issue is addressed in iOS, for better compatibility, use `ev.data`.
-
-:::
-
 The `beforeinput` event is dispatched before any modifications to the mathfield 
 have been done. This event is cancelable. Calling `preventDefault()` on the 
 event will cause the modification to be prevented.

docs/mathfield/12-customizing.md

@@ -643,4 +643,4 @@ MathfieldElement.fontsDirectory = "https://unpkg.com/mathlive/dist/fonts/";
 <math-field>
     x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}
 </math-field>
-```
+```