Fixed compilation issue + set version to 1.1.0

Author: Alexandre Curreli

build.sbt

@@ -6,7 +6,7 @@ organization := "com.livestream"
 
 name := "scredis"
 
-version := "1.1.0-SNAPSHOT"
+version := "1.1.0"
 
 scalaVersion := "2.9.3"
 

src/test/scala/scredis/commands/KeysCommandsSpec.scala

@@ -24,7 +24,6 @@ import scredis.exceptions.RedisCommandException
 import scredis.tags._
 
 import scala.collection.mutable.ListBuffer
-import scala.concurrent.duration._
 
 class KeysCommandsSpec extends WordSpec with GivenWhenThen with BeforeAndAfterAll {
   private val client = Redis()