diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f72c36e..2b68b44a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## Unreleased
 
+## [4.2.0] - 2018-11-14
+
 ### Added
 
 - output format: hdt
@@ -106,6 +108,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - support for accessing remote files (via HTTP GET)
 - basic support for functions
 
+[4.2.0]: https://github.com/RMLio/rmlmapper-java/compare/v4.1.0...v4.2.0
 [4.1.0]: https://github.com/RMLio/rmlmapper-java/compare/v4.0.0...v4.1.0
 [4.0.0]: https://github.com/RMLio/rmlmapper-java/compare/v0.2.1...v4.0.0
 [0.2.1]: https://github.com/RMLio/rmlmapper-java/compare/v0.2.0...v0.2.1
diff --git a/README.md b/README.md
index 51b66fc8..6086d539 100644
--- a/README.md
+++ b/README.md
@@ -79,21 +79,27 @@ import be.ugent.rml.records.RecordsFactory;
 import be.ugent.rml.store.RDF4JStore;
 import be.ugent.rml.store.QuadStore;
 
-public class Main {
+import java.io.FileInputStream;
+import java.io.InputStream;
+
+
+class Main {
 
     public static void main(String[] args) {
 
-        boolean removeDuplicates = false; //set to true if you want to remove duplicates triples/quads from the output
         String cwd = "/home/rml"; //path to default directory for local files
         String mappingFile = "/home/rml/mapping.rml.ttl"; //path to the mapping file that needs to be executed
-        List<String> triplesMaps = new ArrayList<>(); //list of triplesmaps to execute. When this list is empty all triplesmaps in the mapping file are executed
         
-        InputStream mappingStream = new FileInputStream(mappingFile);
-        Model model = Rio.parse(mappingStream, "", RDFFormat.TURTLE);
-        RDF4JStore rmlStore = new RDF4JStore(model);
-        
-        Executor executor = new Executor(rmlStore, new RecordsFactory(new DataFetcher(cwd, rmlStore)));
-        QuadStore result = executor.execute(triplesMaps, removeDuplicates);
+        try {
+            InputStream mappingStream = new FileInputStream(mappingFile);
+            Model model = Rio.parse(mappingStream, "", RDFFormat.TURTLE);
+            RDF4JStore rmlStore = new RDF4JStore(model);
+
+            Executor executor = new Executor(rmlStore, new RecordsFactory(new DataFetcher(cwd, rmlStore)));
+            QuadStore result = executor.execute(null);
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        }
     } 
 }
 ```
@@ -137,24 +143,51 @@ You can change the functions.ttl path using a commandline-option (`-f`).
 This overrides the dynamic loading.
 See the snippet below for an example of how to do it.
 
-```
+```java
+package be.ugent.rml;
+
+import be.ugent.rml.functions.FunctionLoader;
 import be.ugent.rml.functions.lib.GrelProcessor;
+import be.ugent.rml.records.RecordsFactory;
+import be.ugent.rml.store.QuadStore;
+import com.google.common.io.Resources;
 
-String mapPath = "path/to/mapping/file";
-String outPath = "path/to/where/the/output/triples/should/be/written";
-
-Map<String, Class> libraryMap = new HashMap<>();
-libraryMap.put("GrelFunctions.jar", GrelProcessor.class);
-FunctionLoader functionLoader = new FunctionLoader(libraryMap);
-try {
-    Executor executor = this.createExecutor(mapPath, functionLoader);
-    doMapping(executor, outPath);
-} catch (IOException e) {
-    logger.error(e.getMessage(), e);
+import java.io.File;
+import java.net.URL;
+import java.util.HashMap;
+import java.util.Map;
+
+
+class Main {
+
+    public static void main(String[] args) {
+        String mapPath = "path/to/mapping/file";
+        String functionPath = "path/to/functions.ttl/file";
+
+        URL url = Resources.getResource(functionPath);
+        
+        Map<String, Class> libraryMap = new HashMap<>();
+        libraryMap.put("GrelFunctions.jar", GrelProcessor.class);
+        try {
+            File functionsFile = new File(url.toURI());
+            FunctionLoader functionLoader = new FunctionLoader(functionsFile, null, libraryMap);
+            ClassLoader classLoader = Main.class.getClassLoader();
+            // execute mapping file
+            File mappingFile = new File(classLoader.getResource(mapPath).getFile());
+            QuadStore rmlStore = Utils.readTurtle(mappingFile);
+            
+            Executor executor = new Executor(rmlStore, new RecordsFactory(new DataFetcher(mappingFile.getParent(), rmlStore)),
+                functionLoader);
+            QuadStore result = executor.execute(null);
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+        }
+    }
 }
 ```
 
 ### Testing
+
 #### RDBs
 Make sure you have [Docker](https://www.docker.com) running.
 
@@ -181,6 +214,7 @@ Make sure you have [Docker](https://www.docker.com) running.
 | com.opencsv opencsv                | Apache License 2.0                                                 |
 | commons-lang                       | Apache License 2.0                                                 |
 | ch.qos.logback                     | Eclipse Public License 1.0 & GNU Lesser General Public License 2.1 |
+| org.rdfhdt.hdt-jena                | GNU Lesser General Public License v3.0                             |
 
 # UML Diagrams
 ## How to generate with IntelliJ IDEA
@@ -189,4 +223,4 @@ Make sure you have [Docker](https://www.docker.com) running.
 * Right click on package: "be.ugent.rml"
 * Diagrams > Show Diagram > Java Class Diagrams
 * Choose what properties of the classes you want to show in the upper left corner
-* Export to file > .png  | Save diagram > .uml
\ No newline at end of file
+* Export to file > .png  | Save diagram > .uml
diff --git a/pom.xml b/pom.xml
index c9d6487d..11db504f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,7 +2,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>be.ugent.rml</groupId>
     <artifactId>rmlmapper</artifactId>
-    <version>4.1.0</version>
+    <version>4.2.0</version>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <junit.version>4.12</junit.version>