Adding support for inlinks filtering. The same assumption as in outlinks is used, inlinks from the same host as the webpage are ignored
Adding a few tests
Added host triming, allows the hability to add only the host portion of the inlinks and outlinks, in case of several inlinks comming from the same host, and there by with the same host portion are only added once. By default the plugin keeps adding the full URL.

Added a few more tests
Updating the README file to show the new configurations, and adding explanations about the default behaviour of the plugin in each case