Update README, change contributor info

Author: MRNIU

README.adoc

@@ -5,6 +5,16 @@ This library allows an Arduino board with USB capabilities to act as a Keyboard.
 For more information about this library please visit us at
 https://www.arduino.cc/reference/en/language/functions/usb/keyboard/
 
+= Contributors =
+
+Original code (pre-library): Peter Barrett
+
+Contributor: MRNIU
+
+= Usage =
+
+See examples/Serial/Serial.ino
+
 == License ==
 
 Copyright (c) Arduino LLC. All right reserved.

src/KeyboardLayouts/README.adoc

@@ -0,0 +1,27 @@
+= Contributors =
+
+Original code (pre-library): NicoHood
+
+Contributor: MRNIU
+
+== License ==
+
+Copyright (c) 2014-2015 NicoHood
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.