Travis says:
The source code is licensed under the Apache License, Version 2.0.
This library requires Java 8.
org.apache.httpcomponents:httpclient:4.3.X
com.fasterxml.jackson.core:jackson-annotations:2.6.X
com.fasterxml.jackson.core:jackson-databind:2.6.X
This library is available on my personal maven repository, which is hosted on GitHub.
To use this with library with Maven, add the following snippets to your pom.xml file:
...
<repository>
<id>stil4m-releases</id>
<name>stil4m-releases</name>
<url>https://github.com/stil4m/maven-repository/raw/master/releases/</url>
</repository>
...
<depencency>
<groupId>nl.stil4m</groupId>
<artifactId>mollie-api</artifactId>
<version>1.0.0</version>
</depencency>
...
To build a the JAR you can run mvn install.