Update acronym to match canonical-data. Refs exercism#488

exercises/acronym/example.scala

@@ -1,5 +1,8 @@
 object Acronym {
   def abbreviate(phrase: String): String = {
-    "[A-Z]+[a-z]*|[a-z]+".r.findAllIn(phrase).map(s => s.head.toUpper).mkString
+    "('\\w+)|(\\w+'\\w+)|(\\w+')|(\\w+)".r
+      .findAllIn(phrase)
+      .map(_.head.toUpper)
+      .mkString
   }
 }

exercises/acronym/src/test/scala/AcronymTest.scala

@@ -1,29 +1,44 @@
 import org.scalatest.{Matchers, FunSuite}
 
-/** @version 1.3.0 */
+/** @version 1.6.0 */
 class AcronymTest extends FunSuite with Matchers {
 
   test("basic") {
     Acronym.abbreviate("Portable Network Graphics") should be ("PNG")
   }
 
   test("lowercase words") {
-    pending
+    //pending
     Acronym.abbreviate("Ruby on Rails") should be ("ROR")
   }
 
   test("punctuation") {
-    pending
+    //pending
     Acronym.abbreviate("First In, First Out") should be ("FIFO")
   }
 
   test("all caps word") {
-    pending
+    //pending
     Acronym.abbreviate("GNU Image Manipulation Program") should be ("GIMP")
   }
 
   test("punctuation without whitespace") {
-    pending
+    //pending
     Acronym.abbreviate("Complementary metal-oxide semiconductor") should be ("CMOS")
   }
-}
+
+  test("very long abbreviation") {
+    //pending
+    Acronym.abbreviate("Rolling On The Floor Laughing So Hard That My Dogs Came Over And Licked Me") should be ("ROTFLSHTMDCOALM")
+  }
+
+  test("consecutive delimiters") {
+    //pending
+    Acronym.abbreviate("Something - I made up from thin air") should be ("SIMUFTA")
+  }
+
+  test("apostrophes") {
+    //pending
+    Acronym.abbreviate("Halley's Comet") should be ("HC")
+  }
+}