Update the README with all of the customizations available in the library #95
Description
A lot of features have been added to the library over the course of GSSoC20. Now it is necessary to document those features properly so that any dev willing to use the library may find it easy to do so.
- Go through the entire library and make a list of all possible customizations
- Create a separate section in the README for each customization describing how to use it both through Java & XML