message: Improved README installation instructions
diff: @@ -93,7 +93,7 @@ curl https://sh.rustup.rs -sSf | sh
  Please select your operating system:
  <details>
  - <summary>macOS</summary>
  + <summary><b>macOS</b></summary>
  <p>
  #### macOS
  @@ -114,8 +114,9 @@ sudo port install cmake
  </details>
  <details>
  - <summary>Debian-based Linuxes</summary>
  + <summary><b>Debian-based Linuxes</b></summary>
  <p>
  +
  #### Debian-based Linuxes
  ```sh
  @@ -125,7 +126,7 @@ sudo apt install cmake pkg-config libssl-dev
  </details>
  <details>
  - <summary>FreeBSD</summary>
  + <summary><b>FreeBSD</b></summary>
  <p>
  #### FreeBSD
  @@ -137,7 +138,7 @@ pkg install cmake
  </details>
  <details>
  - <summary>Windows</summary>
  + <summary><b>Windows</b></summary>
  <p>
  #### Windows (MSVC)
  @@ -228,9 +229,8 @@ Below are some of the goals of this project (in order of priority):
  - [x] It should be 100% compatible with the [WebAssembly spec tests](https://github.com/wasmerio/wasmer/tree/master/lib/spectests/spectests)
  - [x] It should be fast _(partially achieved)_
  - [x] Support WASI - released in [0.3.0](https://github.com/wasmerio/wasmer/releases/tag/0.3.0)
  -- [ ] Support Emscripten calls _(in the works)_
  -- [ ] Support Rust ABI calls
  -- [ ] Support Go ABI calls
  +- [x] Support Emscripten calls _(in the works)_
  +- [ ] Support Go js ABI calls
  ## Architecture
  