Prepare doc for 0.3.1

Author: spaced

README.md

@@ -11,7 +11,7 @@ Usage
 -----
 Add the following to your sbt build definition:
 
-    libraryDependencies += "org.singlespaced" %%% "scalajs-d3" % "0.3.0"
+    libraryDependencies += "org.singlespaced" %%% "scalajs-d3" % "0.3.1"
 
 Enjoy the types available in `org.singlespaced.d3js`:
 ```
@@ -35,7 +35,7 @@ more about [d3js.org](http://d3js.org)
 
 See also example project [scala-js-d3-example-app](https://github.com/spaced/scala-js-d3-example-app)
 
-- scalajs-d3 0.3.0 is for Scala.js 0.6.6+, with both Scala 2.10 and 2.11.
+- scalajs-d3 0.3.1 is for Scala.js 0.6.6+, with both Scala 2.10 and 2.11.
 - scalajs-d3 0.2.0 is for Scala.js 0.6.5, with both Scala 2.10 and 2.11.