update version

README.md

@@ -18,13 +18,15 @@ The lists support the following operations:
 # How to use
 The library is still considered beta. There no pre-build artifacts on Maven Central or JCenter, but you can download them from repo.lucares.org.
 
+Example for Gradle:
+
 ```groovy
 apply plugin: 'maven'
 repositories {
 	maven { url 'https://repo.lucares.org/' }
 }
 dependencies {
-	compile 'org.lucares:primitiveCollections:0.1.20171228131833'
+	compile 'org.lucares:primitiveCollections:0.1.20181120195412'
 }
 ```