Issue

It is unclear how to build and deploy casper contract without digging into the testing infrastructure.

Propose Implementation

Add clear instructions for compiling and initialization via init to README. Including

• which version of vyper to install
• how to compile with vyper
• a sample initialization via init after deploy (in web3.py)
• note that if running on a local chain that RLP_DECODER must be deployed via that raw_tx. Give an example in web3.py