chore: Notes in README to explain lack of reverts (SC-4181) (#5)

* chore: Notes in README to explain lack of reverts

* Update README.md

Co-authored-by: Lucas Manuel <lucas@maple.finance>

README.md

@@ -6,6 +6,11 @@
 
 Basic library designed to be used as a middleware between general smart contracts diverse erc20 tokens. It standardizes the behaviours of all commonly used implementations.
 
+Note, unlike other similar libraries, this  library does not revert on failures, so it can be more flexible for contracts that:
+- Want to choose their own revert strings, or none at all (i.e. `require(ERC20Helper.transfer(asset, msg.sender, amount), "FOO:FAILED_TRANSFER");`).
+- Want to use the returns as booleans (i.e. `require(ERC20Helper.transfer(asset1, msg.sender, amount) || ERC20Helper.transfer(asset2, msg.sender, amount));`).
+- Do not care about the result of a transfer.
+
 To clone, set up and run tests:
 
 ```