Added ESPilight libs

lib/ESPiLight/README.md

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+[![Build Status](https://travis-ci.org/puuu/ESPiLight.svg?branch=master)](https://travis-ci.org/puuu/ESPiLight)
+
+# ESPiLight
+
+This Arduino library is a port of the [pilight](https://pilight.org/)
+433.92MHz protocols to the Arduino platform. It was tested with a
+ESP8266. The aim is to transmit, receive and parse many 433.92MHz
+protocols, by providing a simple Arduino friendly API. This should
+help to implement IoT bridges between the 434MHz-RF band and internet
+protocols.
+
+By porting the C modules of the pilight protocols, allows to
+participate on the excellent work of the pilight community. Thus,
+supporting many protocols for rc switches and weather stations without
+reimplementing them.
+
+A list of supported protocols can be found in the pilight manual:
+https://manual.pilight.org/protocols/433.92/index.html
+
+
+## Installation
+
+This library can be easily installed with the Arduino Library Manager.
+
+
+## Usage
+
+Please have a look to the examples.
+
+
+### Requirements
+
+This library was tested and developed for the
+[ESP8266](https://github.com/esp8266/Arduino). It may not run on a
+ATmega-based boards, because of memory usage.
+
+For transmitting and receiving you need 434MHz-RF modules. More
+information can be found here:
+- https://wiki.pilight.org/receivers
+- https://wiki.pilight.org/senders
+- https://github.com/sui77/rc-switch/wiki/List_TransmitterReceiverModules
+
+
+## Contributing
+
+If you find any bug, feel free to open an issue at github.  Also, pull
+requests are welcome. The development takes place in the `master`
+branch. The `release` is used to integrate the pilight files and for
+version tagging, like necessary for the Arduino Library Manager
+crawler.
+
+To prevent formating issues, please make sure that your code is proper
+formatted. We use the `clang-format` tool with the `Google` style.
+You can just format the code by calling
+```console
+$ clang-format -style=Google -i <source-file>
+```
+
+
+### Install from source
+
+If you are interested to install this library from source, you need to
+integrate the pilight source files. Since Arduino build all cpp/c
+files in the src directory and sub directories, only necessary files
+from pilight will be integrated.  This will be done with GNU make.
+
+On Linux you can run:
+```console
+$ git clone https://github.com/puuu/ESPiLight/
+$ cd ESPiLight
+$ make
+$ ln -s `pwd` ~/Arduino/libraries/
+```
+
+
+#### Update
+
+To update EPiLight from git run:
+```console
+$ git pull
+$ make update
+```
+
+
+#### New protocols
+
+ESPiLight only supports the 434MHz protocols supported by
+[pilight](https://pilight.org/). If you are missing any protocol,
+please report it directly to pilight. After the intergratrion into
+pilight it can be merged into ESPILight.
+
+To report new protocols, please folow the
+[rules](https://forum.pilight.org/showthread.php?tid=761) of the
+[pilight forum](https://forum.pilight.org/). It is recommended to use
+pilight directly. Alternativly, ESPiLight offers the
+[`pilight_debug`](examples/pilight_debug/pilight_debug.ino) and
+[`pilight_raw`](examples/pilight_raw/pilight_raw.ino) examples that
+mimic tht pilight counterparts.
+
+
+## Acknowledgement
+
+Big thanks goes to the pilight community, which implemented all the
+434MHz protocols. If you want to integrate more protocols, please
+contribute directly to [pilight](https://pilight.org/).
+
+[@janLo](https://github.com/janLo) [contributed](https://github.com/puuu/ESPiLight/graphs/contributors) some major cleanups and new functionalities to the library.
+
+## Other similar projects
+
+There are other, more lightweight 434Mhz implementations:
+- https://github.com/sui77/rc-switch
+- https://bitbucket.org/fuzzillogic/433mhzforarduino/wiki/Home