* Implement init maxSupply when deploying TST
* README and comments updates
* Move the maxSupply!=zero check to init function and add test
* Fix mintWithEth command in test/README.md
* Remove incorrect proxy deployment in TestStableTokenFactory
* Remove redundant post deploy check
* Update test/README with default token amount in ETH
* Update README section on Proxy address upgrade
* Add example env for TST commands
* Add prerequisites section to test/README
