Co-authored-by: Dónal Murray <donal.murray@parity.io>

* Cleanup light client leftovers

* Readme: make it clear that Collator is full node of parachain

* cargo update -p sp-io

* cargo update -p polkadot-primitives

* Move pallets to pallets folder and rename them

* Move genesis file to service

* Rename primitives to primitives-core

* Delete cumulus-runtime

* Move stuff to client folder and rename

* Updated docs

* README 100-character line length

* We're keeping the name

* Adds some highlevel docs for Cumulus

* Apply suggestions from code review

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-Authored-By: Joshy Orndorff <JoshOrndorff@users.noreply.github.com>
Co-Authored-By: Nikolay Volf <nikvolf@gmail.com>

* Update docs/overview.md

Co-Authored-By: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update docs/overview.md

Co-Authored-By: Robert Habermeier <rphmeier@gmail.com>

* Add sentence

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-authored-by: Joshy Orndorff <JoshOrndorff@users.noreply.github.com>
Co-authored-by: Nikolay Volf <nikvolf@gmail.com>
Co-authored-by: Robert Habermeier <rphmeier@gmail.com>