Update readme with bufferSplit example

Author: akarnokd

README.md

@@ -13,7 +13,7 @@ RxJava 2.x implementation of extra sources, operators and components and ports o
 
 ```
 dependencies {
-    compile "com.github.akarnokd:rxjava2-extensions:0.14.2"
+    compile "com.github.akarnokd:rxjava2-extensions:0.14.3"
 }
 ```
 
@@ -641,6 +641,22 @@ Flowable.just("1", "2", "#", "3", "#", "4", "#")
 );
 ```
 
+### FlowableTransformers.bufferSplit
+
+Buffers into a list/collection while the predicate returns false. When it returns true,
+a new buffer is started and the particular item won't be in any of the buffers.
+
+```java
+Flowable.just("1", "2", "#", "3", "#", "4", "#")
+.compose(FlowableTransformers.bufferSplit(v -> "#".equals(v)))
+.test()
+.assertResult(
+    Arrays.asList("1", "2"),
+    Arrays.asList("3"),
+    Arrays.asList("4")
+);
+```
+
 ### FlowableTransformers.spanout
 
 Inserts a time delay between emissions from the upstream. For example, if the upstream emits 1, 2, 3 in a quick succession, a spanout(1, TimeUnit.SECONDS) will emit 1 immediately, 2 after a second and 3 after a second after 2. You can specify the initial delay, a custom scheduler and if an upstream error should be delayed after the normal items or not.