Initializing ReflectionAPI To initialize ReflectionAPI, you must call ReflectionApi.init() in your onEnable method. This is required because this API is not meant to be a plugin and instead should be compiled into your resulting jar. There is no real need for it to be a full-fledged plugin so it is simple a library.
Javadoc Javadoc can be found can be found on my github.io page. Additionally, you can find more API examples there as well. (These examples also have stuff for another API I'm developing.) I am still in the process of creating more of these examples however.
Adding to your project In order to add this API to your project, you can use jitpack and maven