Merge pull request #2 from pmmax/master

Added openzeppelin-solidity reference and license

labs/algo-erc20-token/src/AdvancedAlgos.AlgoErc20Token/SmartContracts/src/openzeppelin-solidity/OPENZEPPELIN-SOLIDITY-LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016 Smart Contract Solutions, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

labs/algo-erc20-token/src/AdvancedAlgos.AlgoErc20Token/SmartContracts/src/openzeppelin-solidity/README.md

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+# ERC20 implementation
+
+The code used for the token smart-contract implementation is based on openzeppelin-solidity
+
+* Source: https://github.com/OpenZeppelin/openzeppelin-solidity