Add a predefined constant for non exhaustive match pattern

build.sbt

@@ -21,7 +21,7 @@ name := "clippy"
 // factor out common settings into a sequence
 lazy val commonSettingsNoScalaVersion = Seq(
   organization := "com.softwaremill.clippy",
-  version := "0.6.0",
+  version := "0.6.1",
   scalacOptions ++= Seq("-unchecked", "-deprecation"),
   parallelExecution := false,
   // Sonatype OSS deployment

plugin-sbt/src/main/scala/com/softwaremill/clippy/ClippySbtPlugin.scala

@@ -26,6 +26,10 @@ object ClippySbtPlugin extends AutoPlugin {
     val None         = Value("none")
   }
 
+  object WarningPatterns {
+    val NonExhaustiveMatch = "match may not be exhaustive[\\s\\S]*"
+  }
+
   object autoImport {
     val clippyColorsEnabled = settingKey[Boolean]("Should Clippy color type mismatch diffs and highlight syntax")
     val clippyColorDiff     = settingKey[Option[ClippyColor.Value]]("The color to use for diffs, if other than default")
@@ -45,6 +49,7 @@ object ClippySbtPlugin extends AutoPlugin {
       settingKey[Option[String]]("Project root in which project-specific advice is stored, if any")
     val clippyFatalWarnings =
       settingKey[List[String]]("Regular expressions of warning messages which should fail compilation")
+    val NonExhaustiveMatch = "match may not be exhaustive[\\s\\S]*"
   }
 
   // in ~/.sbt auto import doesn't work, so providing aliases here for convenience

ui/app/views/use.scala.html

@@ -29,7 +29,7 @@ <h2>Adding the plugin</h2>
 </p>
 
 <pre>
-addSbtPlugin("com.softwaremill.clippy" % "plugin-sbt" % "0.6.0")
+addSbtPlugin("com.softwaremill.clippy" % "plugin-sbt" % "0.6.1")
 </pre>
 
 <p>
@@ -58,9 +58,11 @@ <h2>(NEW!) Turning selected compilation warnings into errors</h2>
     use the <code>clippyFatalWarnings</code> setting, for example:
 </p>
 <pre>
+    import com.softwaremill.clippy.ClippySbtPlugin.WarningPatterns._
+    // ...
     settings(
       clippyFatalWarnings ++= List(
-        "match may not be exhaustive[\\s\\S]*",
+        NonExhaustiveMatch,
         ".*\\[wartremover:.*\\].*[\\s\\S]*"
       )
     )
@@ -175,15 +177,15 @@ <h2>Alternative ways to use Clippy</h2>
 </p>
 
 <pre>
-addCompilerPlugin("com.softwaremill.clippy" %% "plugin" % "0.6.0" classifier "bundle")
+addCompilerPlugin("com.softwaremill.clippy" %% "plugin" % "0.6.1" classifier "bundle")
 </pre>
 
 <p>
     If you are using <code>scalac</code> directly, add the following option:
 </p>
 
 <pre>
--Xplugin:clippy-plugin_2.11-0.6.0-bundle.jar
+-Xplugin:clippy-plugin_2.11-0.6.1-bundle.jar
 </pre>
 
 <p>