Update Mono binaries to a14f41c.

src/mono/incoming/README.md

@@ -1,13 +1,14 @@
 # Contents
-- bcl Directory. Core libraries to be used with the runtime.
-- driver.c, libmonosgen-2.0.a, library_mono.js: Source / Binaries for custom building the runtime. See compilation instructions down.
-- debug, release: Pre-compiled runtimes using the above driver in release and debug configurations.
-- sample.html / sample.cs: Sample code, see sample details down there.
+- **bcl** directory: Core libraries to be used with the runtime.
+- **driver.c**, **libmonosgen-2.0.a**, **library_mono.js**: Source / Binaries for custom building the runtime. See compilation instructions down.
+- **debug**, **release** directories: Pre-compiled runtimes using the above driver in release and debug configurations.
+- **sample.html**, **sample.cs**: Sample code, see sample details below.
 
 
 # Compiling mono
 
-Mono requires the latest emscripten installed and built[1]. The pre-built binaries are compiled using the following command line for the debug build:
+Mono requires the latest emscripten installed and built[1]. Emscripten is *not* required if simply using the sample.
+The pre-built binaries are compiled using the following command line for the debug build:
 
 ```
 	emcc -g4 -Os -s WASM=1 -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN=1 -s "BINARYEN_TRAP_MODE='clamp'" -s TOTAL_MEMORY=134217728 -s ALIASING_FUNCTION_POINTERS=0 -s ASSERTIONS=2 --js-library library_mono.js driver.o $(TOP)/sdks/out/wasm-interp/lib/libmonosgen-2.0.a -o debug/mono.js -s NO_EXIT_RUNTIME=1 -s "EXTRA_EXPORTED_RUNTIME_METHODS=['ccall', 'FS_createPath', 'FS_createDataFile', 'cwrap', 'setValue', 'getValue', 'UTF8ToString']"
@@ -16,29 +17,53 @@ Mono requires the latest emscripten installed and built[1]. The pre-built binari
 
 # Sample
 
+## Step 1
 To setup the sample, first you need to compile & setup a directory to serve binaries:
 
+**Linux / Mac**
 ```
 mkdir managed
 cp bcl/mscorlib.dll managed/
 csc /nostdlib /target:library /r:managed/mscorlib.dll /out:managed/sample.dll sample.cs 
 ```
+**Windows**
 
-Second, pick a pre-built runtime from one of the directories and copy all files to the the root SDK directory:
+The **csc** executable is a build tool that is installed with Visual Studio. For the commands below, using a command window opened using a *Developer Command Prompt for Visual Studio* is convenient.
+```
+md managed
+copy bcl\mscorlib.dll managed
+csc /nostdlib /target:library /r:managed/mscorlib.dll /out:managed/sample.dll sample.cs 
+```
 
+## Step 2
+Pick a pre-built runtime from one of the directories and copy all files to the root SDK directory. Allow file overwrites if necessary:
+
+**Linux / Mac**
 ```
 cp debug/* .
 ```
+**Windows**
+```
+copy debug\* .
+```
 
-Once that's done, Start a web server from the SDK directory (where sample.html is):
+## Step 3
+Start a web server from the SDK directory (where sample.html is):
 
 ```
 python -m SimpleHTTPServer
 ```
 
-Unfortunately, the above http server doesn't give  wasm binaries the right mime type, which disables WebAssembly stream compilation.
-The included server.py script solves this and can be used instead.
+Unfortunately, the above http server does not give wasm binaries the right mime type, which disables WebAssembly stream compilation.
+The included server.py script solves this and can be used instead:
+```
+python server.py
+```
+
+## Step 4
+From within a browser, go to `locahost:8000/sample.html` to see the sample app, which will show a text box (allowing C# code to be entered) and **Run** button when successfully built.
 
-Go to `locahost:8000/sample.html` and it should work.
 
 [1] https://github.com/kripken/emscripten
+
+[2] https://docs.microsoft.com/en-us/dotnet/framework/tools/developer-command-prompt-for-vs