Merge pull request #39 from smartcontractkit/feat/add-abi-to-readme

added abi to readme

Author: se3000

README.md

@@ -16,6 +16,13 @@ Security audit for [v0.4 version of the contracts](./contracts/v0.4/) is availab
 - Name: ChainLink Token
 - Symbol: LINK
 
+## ABI
+
+- [v0.4](./contracts/v0.4#solidity-abi)
+- [v0.6](./contracts/v0.6#solidity-abi)
+
+You can also find interfaces and ABIs after running through the install `yarn setup` process. 
+
 ## Installation
 
 The project contains [v0.4 contracts](./contracts/v0.4/) that were used for LINK Ethereum Mainnet deployment in 2017. For deployments moving forward, we use the updated [v0.6 contracts](./contracts/v0.6/) which use a more recent version of solc and the OpenZeppelin token standards. These updates include a minor ABI change around approval/allowance naming.