lib: move `examples/emscripten` to `lib/emscripten/examples`

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/examples/emscripten/README.md b/lib/emscripten/examples/README.md
similarity index 100%
rename from examples/emscripten/README.md
rename to lib/emscripten/examples/README.md

diff --git a/examples/emscripten/fibonacci/Makefile b/lib/emscripten/examples/fibonacci/Makefile
similarity index 100%
rename from examples/emscripten/fibonacci/Makefile
rename to lib/emscripten/examples/fibonacci/Makefile

diff --git a/examples/emscripten/fibonacci/www/index.html b/lib/emscripten/examples/fibonacci/www/index.html
similarity index 100%
rename from examples/emscripten/fibonacci/www/index.html
rename to lib/emscripten/examples/fibonacci/www/index.html

diff --git a/examples/emscripten/hello_world/Makefile b/lib/emscripten/examples/hello_world/Makefile
similarity index 100%
rename from examples/emscripten/hello_world/Makefile
rename to lib/emscripten/examples/hello_world/Makefile

diff --git a/examples/emscripten/hello_world/www/index.html b/lib/emscripten/examples/hello_world/www/index.html
similarity index 100%
rename from examples/emscripten/hello_world/www/index.html
rename to lib/emscripten/examples/hello_world/www/index.html