Add embedded introduction

README.md

@@ -538,13 +538,15 @@ See also [A comparison of operating systems written in Rust](https://github.com/
 
 ### Embedded
 
-[Rust Embedded](https://rust-embedded.org/)
+[Rust Embedded](https://rust-embedded.org/) focuses on improving the end-to-end experience of using Rust in resource-constrained environments and non-traditional platforms. See [awesome embedded Rust ](https://github.com/rust-embedded/awesome-embedded-rust) for a curated, and more extended list of embedded Rust resources.
 
 * Arduino
   * [avr-rust/ruduino](https://github.com/avr-rust/ruduino) Reusable components for the Arduino Uno.
 * Cross compiling
   * [japaric/rust-cross](https://github.com/japaric/rust-cross) — everything you need to know about cross compiling Rust programs [![build badge](https://api.travis-ci.org/japaric/rust-cross.svg?branch=master)](https://travis-ci.org/japaric/rust-cross)
   * [japaric/xargo](https://github.com/japaric/xargo) — effortless cross compilation of Rust programs to custom bare-metal targets like ARM Cortex-M [![build badge](https://api.travis-ci.org/japaric/xargo.svg?branch=master)](https://travis-ci.org/japaric/xargo)
+* Espressif
+  * [esp-rs](https://github.com/esp-rs) home to a number of community projects enabling the use of the Rust programming language on various SoCs and modules produced by Espressif Systems.
 * Raspberry Pi
   * [Ogeon/rust-on-raspberry-pi](https://github.com/Ogeon/rust-on-raspberry-pi) — instructions for how to cross compile Rust projects for the Raspberry Pi .