Remove outdated jdks and update readme

.travis.yml

@@ -4,8 +4,6 @@ install: true
 
 jdk:
   - oraclejdk8
-  - oraclejdk9
-  - oraclejdk10
   - oraclejdk11
 
 addons:
@@ -26,5 +24,5 @@ before_install:
  - chmod +x gradlew
 
 after_success:
-  - ./gradlew cobertura coveralls
+  - ./gradlew cobertura coveralls sonarqube
 #  - mvn cobertura:cobertura coveralls:report

README.md

@@ -2,10 +2,12 @@ Lightweight-Stream-API
 ======================
 
 [![Join the chat at https://gitter.im/aNNiMON/Lightweight-Stream-API](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/aNNiMON/Lightweight-Stream-API?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.annimon/stream/badge.svg?style=flat)](https://maven-badges.herokuapp.com/maven-central/com.annimon/stream)
-[![Build Status](https://travis-ci.org/aNNiMON/Lightweight-Stream-API.svg?branch=master)](https://travis-ci.org/aNNiMON/Lightweight-Stream-API)
 [![Coverage Status](https://coveralls.io/repos/aNNiMON/Lightweight-Stream-API/badge.svg?branch=master&service=github)](https://coveralls.io/github/aNNiMON/Lightweight-Stream-API?branch=master)
-[![](http://javadoc-badge.appspot.com/com.annimon/stream.svg?label=JavaDocs)](http://www.javadoc.io/doc/com.annimon/stream/)
+[![SonarCloud Status](https://sonarcloud.io/api/project_badges/measure?project=lightweight-stream-api&metric=alert_status)](https://sonarcloud.io/dashboard?id=lightweight-stream-api)
+[![SonarCloud Quality Gate](https://sonarcloud.io/api/project_badges/measure?project=lightweight-stream-api&metric=sqale_rating)](https://sonarcloud.io/dashboard/?id=lightweight-stream-api)  
+[![Build Status](https://travis-ci.org/aNNiMON/Lightweight-Stream-API.svg?branch=master)](https://travis-ci.org/aNNiMON/Lightweight-Stream-API)
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.annimon/stream/badge.svg?style=flat)](https://maven-badges.herokuapp.com/maven-central/com.annimon/stream)
+[![JavaDocs](http://javadoc-badge.appspot.com/com.annimon/stream.svg?label=JavaDocs)](http://www.javadoc.io/doc/com.annimon/stream/)
 
 Stream API from Java 8 rewritten on iterators for Java 7 and below.