Fix online wasm build instructions (#226)

Author: mcbarton

docs/source/InstallationAndUsage.rst

@@ -46,14 +46,17 @@ Installation within a mamba environment (wasm build instructions)
 ========================
 
 These instructions will assume you have cmake installed on your system. First clone the repository, and move into that directory
+
 .. code-block:: bash
+
     git clone --depth=1 https://github.com/compiler-research/xeus-cpp.git
     cd ./xeus-cpp
 
 
 You'll now want to make sure you're using emsdk version "3.1.45" and activate it. You can get this by executing the following
 
 .. code-block:: bash
+
     cd $HOME
     git clone https://github.com/emscripten-core/emsdk.git
     cd emsdk
@@ -65,6 +68,7 @@ You'll now want to make sure you're using emsdk version "3.1.45" and activate it
 You are now in a position to build the xeus-cpp kernel. You build it by executing the following
 
 .. code-block:: bash
+
     micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32
     mkdir build
     pushd build
@@ -83,22 +87,16 @@ You are now in a position to build the xeus-cpp kernel. You build it by executin
 To build Jupyter Lite with this kernel without creating a website you can execute the following
 
 .. code-block:: bash
+
     micromamba create -n xeus-lite-host jupyterlite-core
     micromamba activate xeus-lite-host
     python -m pip install jupyterlite-xeus
     jupyter lite build --XeusAddon.prefix=$PREFIX
 
-We now need to shift necessary files like `xcpp.data` which contains the binary representation of the file(s)
-we want to include in our application. As of now this would contain all important files like Standard Headers,
-Libraries etc coming out of emscripten's sysroot. Assuming we are still inside build we should do the following
-
-.. code-block:: bash
-    cp $PREFIX/bin/xcpp.data _output/extensions/@jupyterlite/xeus/static
-    cp $PREFIX/lib/libclangCppInterOp.so _output/extensions/@jupyterlite/xeus/static
-
 Once the Jupyter Lite site has built you can test the website locally by executing
 
 .. code-block:: bash
+
     jupyter lite serve --XeusAddon.prefix=$PREFIX
 
 Installing from conda-forge