added build process for Apple devices

README.md

@@ -29,7 +29,7 @@ If Step 5. Build Borepin is failing because of GTKSharp, it could help to restar
 ## Build GTK Project
 1. Install mono
     [download mono](https://www.mono-project.com/download/stable/#download-lin)
-2. Install mono, gtk-sharp, msbuild, nuget
+2. Install mono, gtk-sharp, msbuild, nuget, capnproto
     1.1 Debian based
     ```shell
     $ apt install mono-complete, gtk-sharp2, libcanberra-gtk-module, nuget, capnproto, git
@@ -59,6 +59,23 @@ If Step 5. Build Borepin is failing because of GTKSharp, it could help to restar
     ```
 You can also use Rider or monodevelop as an IDE for development on Borepin
 
+## macOS / iOS
+
+1. Install Visual Studio for Mac 
+
+2. Install capnproto
+    If you install capnp with Homebrew you may have to symlink the capnp binary into '/usr/local/bin', or bring it into your PATH another way.
+
+3. Clone Borepin
+    ```shell
+    $ git clone https://gitlab.com/fabinfra/fabaccess/client.git --recurse-submodules
+    ```
+
+4. Open in Visual Studio
+
+5. Build
+
+
 # UI
 We use [Xamarin](https://dotnet.microsoft.com/apps/xamarin) for our UI Implementation.