POC of Stellar Tokens
https://www.stellar.org/developers/guides/walkthroughs/stellar-smart-contracts.html#implementation
https://testnet.steexp.com/
https://www.stellar.org/blog/tokens-on-stellar/
https://www.stellar.org/blog/using-stellar-for-ico/
https://www.stellar.org/blog/multisig-and-simple-contracts-stellar/
https://medium.com/coinmonks/simple-escrow-contract-using-stellar-67aa799f7db