update Readme

Author: retrostreams

README.md

@@ -11,7 +11,7 @@ android-retroflow is a backport of the new Java 9 (JEP 266) reactive-streams Flo
 There is nothing specific to Android or the desugar toolchain in this code (it could even be compiled to Java 6 bytecode) but
 it has an indirect dependency on [android-retrostreams](https://github.com/retrostreams/android-retrostreams) (via [android-retrofuture](https://github.com/retrostreams/android-retrofuture)) which is why this exists as a separate component (the corresponding
 [streamsupport-flow](https://github.com/stefan-zobel/streamsupport/tree/master/src/flow) component can't be used with android-retrostreams
-and [android-retrostreams](https://github.com/retrostreams/android-retrostreams) itself can *only* be used with desugar or Java 8 / 9).
+and [android-retrostreams](https://github.com/retrostreams/android-retrostreams) itself can *only* be used with desugar or Java 8 and higher).
 
 Other than having a different package name this code has no further changes compared with [streamsupport-flow](https://github.com/stefan-zobel/streamsupport/tree/master/src/flow)
 
@@ -24,7 +24,7 @@ Please give feedback [here](https://github.com/retrostreams/android-retroflow/is
 
 ```gradle
 dependencies {
-    compile 'net.sourceforge.streamsupport:android-retroflow:1.6.3'
+    compile 'net.sourceforge.streamsupport:android-retroflow:1.7.0'
 }
 ```