Merge pull request #1 from memoizr/2.x

depend on 2.5.0

Author: memoizr

build.gradle

@@ -28,7 +28,7 @@ repositories {
 
 dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    compile group: 'org.assertj', name: 'assertj-core', version: '3.5.0'
+    compile group: 'org.assertj', name: 'assertj-core', version: '2.5.0'
     testCompile group: 'junit', name: 'junit', version: '4.12'
     testCompile "org.mockito:mockito-core:1.10.19"
     testCompile "com.nhaarman:mockito-kotlin:0.2.0"