Fix spray-json import to comply with newer versions. (#168)

diff --git a/tests/src/test/scala/system/health/CloudantHealthFeedTests.scala b/tests/src/test/scala/system/health/CloudantHealthFeedTests.scala
index 4c9e0b7..a0302bf 100644
--- a/tests/src/test/scala/system/health/CloudantHealthFeedTests.scala
+++ b/tests/src/test/scala/system/health/CloudantHealthFeedTests.scala
@@ -22,10 +22,8 @@
 import org.scalatest.{BeforeAndAfterEach, FlatSpec, Inside}
 import org.scalatest.junit.JUnitRunner
 import common._
-import spray.json.DefaultJsonProtocol.IntJsonFormat
-import spray.json.DefaultJsonProtocol.StringJsonFormat
-import spray.json.DefaultJsonProtocol.BooleanJsonFormat
-import spray.json.{JsObject, JsString, pimpAny}
+import spray.json.DefaultJsonProtocol._
+import spray.json._
 import system.CloudantUtil
 
 /**
diff --git a/tests/src/test/scala/system/packages/CloudantAccountActionsTests.scala b/tests/src/test/scala/system/packages/CloudantAccountActionsTests.scala
index 343de72..1abea57 100644
--- a/tests/src/test/scala/system/packages/CloudantAccountActionsTests.scala
+++ b/tests/src/test/scala/system/packages/CloudantAccountActionsTests.scala
@@ -20,8 +20,8 @@
 import org.junit.runner.RunWith
 import org.scalatest.FlatSpec
 import org.scalatest.junit.JUnitRunner
-import spray.json.DefaultJsonProtocol.StringJsonFormat
-import spray.json.{JsArray, JsNumber, JsString, JsValue, pimpAny}
+import spray.json.DefaultJsonProtocol._
+import spray.json._
 import system.CloudantUtil
 import whisk.utils.JsHelpers
 
diff --git a/tests/src/test/scala/system/packages/CloudantBindingTests.scala b/tests/src/test/scala/system/packages/CloudantBindingTests.scala
index c619a09..52bff54 100644
--- a/tests/src/test/scala/system/packages/CloudantBindingTests.scala
+++ b/tests/src/test/scala/system/packages/CloudantBindingTests.scala
@@ -20,8 +20,8 @@
 import org.junit.runner.RunWith
 import org.scalatest.FlatSpec
 import org.scalatest.junit.JUnitRunner
-import spray.json.DefaultJsonProtocol.StringJsonFormat
-import spray.json.{JsObject, pimpAny}
+import spray.json.DefaultJsonProtocol._
+import spray.json._
 import system.CloudantUtil
 
 @RunWith(classOf[JUnitRunner])
diff --git a/tests/src/test/scala/system/packages/CloudantDatabaseActionsTests.scala b/tests/src/test/scala/system/packages/CloudantDatabaseActionsTests.scala
index 3bcbd4e..823860b 100644
--- a/tests/src/test/scala/system/packages/CloudantDatabaseActionsTests.scala
+++ b/tests/src/test/scala/system/packages/CloudantDatabaseActionsTests.scala
@@ -22,8 +22,8 @@
 import org.junit.runner.RunWith
 import org.scalatest.FlatSpec
 import org.scalatest.junit.JUnitRunner
-import spray.json.DefaultJsonProtocol.{ByteJsonFormat, StringJsonFormat}
-import spray.json.{JsArray, JsBoolean, JsNumber, JsObject, JsString, pimpAny, pimpString}
+import spray.json.DefaultJsonProtocol._
+import spray.json._
 import system.CloudantUtil
 import whisk.utils.JsHelpers
 
diff --git a/tests/src/test/scala/system/packages/CloudantFeedTests.scala b/tests/src/test/scala/system/packages/CloudantFeedTests.scala
index 987291b..00c370a 100644
--- a/tests/src/test/scala/system/packages/CloudantFeedTests.scala
+++ b/tests/src/test/scala/system/packages/CloudantFeedTests.scala
@@ -21,8 +21,8 @@
 import org.junit.runner.RunWith
 import org.scalatest.{FlatSpec, Inside}
 import org.scalatest.junit.JUnitRunner
-import spray.json.DefaultJsonProtocol.{IntJsonFormat, StringJsonFormat}
-import spray.json.{JsObject, JsString, pimpAny}
+import spray.json.DefaultJsonProtocol._
+import spray.json._
 import system.CloudantUtil
 
 /**
diff --git a/tests/src/test/scala/system/packages/CloudantMultiWorkersTests.scala b/tests/src/test/scala/system/packages/CloudantMultiWorkersTests.scala
index 42f3ed2..e2070ca 100644
--- a/tests/src/test/scala/system/packages/CloudantMultiWorkersTests.scala
+++ b/tests/src/test/scala/system/packages/CloudantMultiWorkersTests.scala
@@ -24,8 +24,8 @@
 import org.junit.runner.RunWith
 import org.scalatest.junit.JUnitRunner
 import org.scalatest.{FlatSpec, Matchers}
-import spray.json.DefaultJsonProtocol.{StringJsonFormat, _}
-import spray.json.{pimpAny, _}
+import spray.json.DefaultJsonProtocol._
+import spray.json._
 import system.CloudantUtil
 import whisk.core.WhiskConfig
 import whisk.core.database.test.ExtendedCouchDbRestClient