Phil authored Jan 24, 2019 and asynchronous rob committed Jan 24, 2019

added newer rust version required, and instructions for updating Rust using `rustup update`

Typo as identified here https://github.com/paritytech/polkadot/pull/64#discussion_r245995562

* docs: Update Readme for PoC-3

* docs: Fix formatting and update Docker section

* docs: Fix formatting. Start trying to make consistent with Substrate repo

* docs: Move Two-Node example into Hack on Substrate