Changed the .gitgnore file to the one "recommended" by GitHub
Changed the inheritance of TagView from EditText to TextView.

Now you can add tags with custom colors, background and border, thanks
to new Tags pojo file.

Tags won't be removed unless you set the TagListView.setRemovableTags method
to true or if you are not using the TagListView for tags, with the
TagView.setRemovableTag method.

Added an on tag click listener.