Documentation: Corrected Install "Using it" section.
Documentation: Added base for Events.
Documentation: Begun Filter base.
Documentation: Finished Filter base documentation. Added a better way for --deleteFilter to work, which is now documented both internally and in the readme.md.
Filter: Removed really stupid way of using --deleteFilter. I wrote the code and it took me a few minutes to work out how it was supposed to work. The new way added in the previous commit is consistent with other packages.