Add contributors on README and gyroscope documentation

README.md

@@ -35,6 +35,11 @@ A smooth 3D tilt javascript library forked from [Tilt.js (jQuery version)](https
     "glare-prerender":      false,  // false = VanillaTilt creates the glare elements for you, otherwise
                                     // you need to add .js-tilt-glare>.js-tilt-glare-inner by yourself
     "mouse-event-element":  null    // css-selector or link to HTML-element what will be listen mouse events 
+    gyroscope:              true    // Boolean to enable/disable device orientation detection,
+    gyroscopeMinAngleX:     -45     // This is the bottom limit of the device angle on X axis, meaning that a device rotated at this angle would tilt the element as if the mouse was on the left border of the element;
+    gyroscopeMaxAngleX:     45      // This is the top limit of the device angle on X axis, meaning that a device rotated at this angle would tilt the element as if the mouse was on the right border of the element;
+    gyroscopeMinAngleY:     -45     // This is the bottom limit of the device angle on Y axis, meaning that a device rotated at this angle would tilt the element as if the mouse was on the top border of the element;
+    gyroscopeMaxAngleY:     45      // This is the top limit of the device angle on Y axis, meaning that a device rotated at this angle would tilt the element as if the mouse was on the bottom border of the element;
 }
 ```
 
@@ -93,6 +98,12 @@ Original library: [Tilt.js](http://gijsroge.github.io/tilt.js/)
 
 Original library author: [Gijs Rogé](https://twitter.com/GijsRoge)
 
+#### Contributors
+
+- [Livio Brunner](https://github.com/BrunnerLivio) <<a href="mailto:contact@brunnerliv.io">contact@brunnerliv.io</a>> (Typings & Glare Effect)
+- [Oleg Postoev](https://github.com/Dok11)
+- [Matteo Rigon](https://github.com/matteo-rigon) (Device orientation support)
+
 ### License
 
 MIT License