add maintenance status on README, remove link to JIRA

Author: gourlaysama

Diff for: README.md

@@ -1,8 +1,10 @@
-scala-parser-combinators [<img src="https://img.shields.io/travis/scala/scala-parser-combinators.svg"/>](https://travis-ci.org/scala/scala-parser-combinators) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-parser-combinators_2.11.svg?label=latest%20release%20for%202.11"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-parser-combinators_2.11) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-parser-combinators_2.12*.svg?label=latest%20release%20for%202.12"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-parser-combinators_2.12*)
+scala-parser-combinators [<img src="https://img.shields.io/travis/scala/scala-parser-combinators.svg"/>](https://travis-ci.org/scala/scala-parser-combinators) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-parser-combinators_2.11.svg?label=latest%20release%20for%202.11"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-parser-combinators_2.11) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-parser-combinators_2.12*.svg?label=latest%20release%20for%202.12"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-parser-combinators_2.12*) [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/scala/scala-parser-combinators)
 ========================
 
 ### Scala Standard Parser Combinator Library
 
+This library is now community-maintained. If you are interested in helping please contact @gourlaysama or mention it [on Gitter](https://gitter.im/scala/scala-parser-combinators).
+
 As of Scala 2.11, this library is a separate jar that can be omitted from Scala projects that do not use Parser Combinators.
 
 ## Documentation
@@ -24,4 +26,5 @@ To support multiple Scala versions, see the example in https://github.com/scala/
 ## Contributing
 
  * See the [Scala Developer Guidelines](https://github.com/scala/scala/blob/2.12.x/CONTRIBUTING.md) for general contributing guidelines
- * Have a look at [existing issues](https://issues.scala-lang.org/issues/?filter=12606)
+ * Have a look at [existing issues](https://github.com/scala/scala-parser-combinators/issues)
+ * Ask questions and discuss [on Gitter](https://gitter.im/scala/scala-parser-combinators)