runtime: testing runtime

runtime/internal/clite/libuv/README.md

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+LLGo wrapper of libuv
+=====
+
+## How to install
+
+### on macOS (Homebrew)
+
+```sh
+brew install libuv
+```
+
+### on Linux (Debian/Ubuntu)
+
+```sh
+apt-get install -y libuv1-dev
+```
+
+### on Linux (CentOS/RHEL)
+
+```sh
+yum install -y libuv-devel
+```
+
+### on Linux (Arch Linux)
+
+```sh
+pacman -S libuv
+```
+
+## Demos
+
+The `_demo` directory contains our demos (it start with `_` to prevent the `go` command from compiling it):
+
+* [async_fs](_demo/async_fs/async_fs.go): a simple async file read demo
+* [echo_server](_demo/echo_server/echo_server.go): a basic async tcp echo server
+
+### How to run demos
+
+To run the demos in directory `_demo`:
+
+```sh
+cd <demo-directory>  # eg. cd _demo/sqlitedemo
+llgo run .
+```