SafeRune token

This erc20 token can wrap an unwrap erc20 rune (0x3155ba85d5f96b2d030a4966af206230e46849cb) in order to protect against a security vulnerability that allows malicious contracts to steal your erc20 rune. A description of the vulnerability can be found here: https://etherscan.io/address/0x4bf5dc91e2555449293d7824028eb8fe5879b689#comments

• Mint new saferun by calling MintSaferun
• Redeem erc20 rune by calling RedeemErc20Rune

It's a nice way to hold your erc20 rune in a wallet you use regularly with untrusted contracts and know it cant be stolen. Mint SafeRune to store long term in your wallet, redeem erc20 rune when you need to trade it.

The erc20 token code is copied from a very simple tried & true token -- Salt (0x4156D3342D5c385a87D264F90653733592000581) modified to work with the latest solidity version and then added the MintSaferun and RedeemErc20Rune functions.

Deploying

1. install truffle globally $ npm install -g truffle
2. run yarn
3. create .env file wikth eth node urls and mnemonic used to pay for deployment.
4. modify truffle-config.js and put a reasonable gas price.
5. run yarn deploy:testnet to dpeloy to ropsten or yarn deploy:mainnet for mainnet.