pushed version of jruby-gradle from version 0.1.9 to 0.1.17 because o…

…f an error on windows 'Could not load FFI Provider' see jruby-gradle/jruby-gradle-plugin#83 (latest version is 0.3.0 but seems not to work ootB)

build.gradle

@@ -34,7 +34,7 @@ repositories {
 dependencies {
   compile gradleApi()
   compile localGroovy()
-  compile "com.github.jruby-gradle:jruby-gradle-plugin:0.1.9"
+  compile "com.github.jruby-gradle:jruby-gradle-plugin:0.1.17"
   compile "com.github.jengelman.gradle.plugins:gradle-processes:0.3.0"
 
   testCompile("org.spockframework:spock-core:0.7-groovy-2.0") {