Add link to API documentation

Author: medovina

README.md

@@ -6,6 +6,8 @@ The standard Scala XML library.
 As of Scala 2.11, this library is a separate jar that can be omitted from Scala projects that do not use XML.
 We're also looking forward to alternative implementations!
 
+API documentation is available [here](http://www.scala-lang.org/api/current/scala-xml/).
+
 ## Adding an SBT dependency
 To depend on scala-xml in SBT, add something like this to your build.sbt: