Update README.md

Author: thomasnield

README.md

@@ -132,6 +132,26 @@ sub2 = textInputs.observeOn(Schedulers.computation())
         .observeOn(JavaFxScheduler.getInstance())
         .subscribe(fippedTextLabel::setText);
 ```
+##Notes for Kotlin 
+If you are building your JavaFX application with [Kotlin](https://kotlinlang.org/), this library becomes even more useful with extension functions. These extension functions exist in the [RxKotlinFX](https://github.com/thomasnield/RxKotlinFX) project, but the API is so small it is not worth publishing at the moment. But you can simply add these extension functions below to your project and utilize Kotlin's fluent style.
+
+```kotlin
+fun <T> Observable<T>.toBinding() = JavaFxSubscriber.toBinding(this)
+fun <T> Observable<T>.toBinding(errorHandler: (Throwable) -> Unit) = JavaFxSubscriber.toBinding(this,errorHandler)
+fun <T> ObservableValue<T>.toObservable() = JavaFxObservable.fromObservableValue(this)
+fun <T> ObservableValue<T>.toObservableChanges() = JavaFxObservable.fromObservableValueChanges(this)
+fun <T> Observable<T>.toFxScheduler() = observeOn(JavaFxScheduler.getInstance())
+fun <T : Event> Node.toNodeEvents(eventType: EventType<T>) = JavaFxObservable.fromNodeEvents(this, eventType)
+fun <T> Observable<T>.observeOnFx() = this.observeOn(JavaFxScheduler.getInstance())
+```
+This allows you to better use Kotlin's features to interop JavaFX and RxJava much more cleanly.
+
+```kotlin
+val sourceObservable = Observable.just("Alpha","Beta","Gamma")
+val lengthBinding = sourceObservable.map { it.length }.toBinding()
+```
+
+If you are doing JavaFX and Kotlin development, definitely check out [TornadoFX](https://github.com/edvin/tornadofx) as well to utilize type-safe builders and other features enabled by Kotlin.
 
 ##Differences from ReactFX
 [ReactFX](https://github.com/TomasMikula/ReactFX) is a popular API to implement reactive patterns with JavaFX using the `EventStream`. However, RxJava uses an `Observable` and the two are not (directly) compatible with each other.