Merge pull request #1 from IoBuilders/feature/v1.28.7

Added cross ledger link, Updated existing contracts

README.md

@@ -2,7 +2,9 @@
 
 An e-money, bank and central bank money issued token based on [ERC-20](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md). With additional functionalities such as holds, clearance and detailed compliance.
 
-This project is the first implementation of electronic money on a Blockchain. The learnings that were made during its creation were used to propose [ERC-2020 - The E-Money Token Standard](https://emoneytokenstandard.org/). Currently there are differences between the interfaces used here and the proposed standard. The interfaces of the standard will be adapted in a future release.
+This project is the first implementation of electronic money on a Blockchain. The learnings that were made during its creation were used to propose [ERC-2020 - The E-Money Token Standard](https://emoneytokenstandard.org/). Currently, there are differences between the interfaces used here and the proposed standard. The interfaces of the standard will be adapted in a future release.
+
+Additionally, to the ERC-2020 standard the token allows cross ledger transfer. This means transferring tokens from one wallet in one blokchain network to another one in a different blockchain network
 
 ## Installation
 
@@ -22,7 +24,7 @@ Please refer to the [ERC-20 Token Standard](https://eips.ethereum.org/EIPS/eip-2
 
 ### Hold
 
-An extension to the ERC-20 standard token that allows tokens to be put on hold. This guarantees a future transfer and makes the held tokens unavailable for transfer in the mean time. Holds are similar to escrows in that are firm and lead to final settlement.
+An extension to the ERC-20 standard token which allows tokens to be put on hold. This guarantees a future transfer and makes the held tokens unavailable for transfer in the meantime. Holds are similar to escrows in that are firm and lead to final settlement.
 
 Please refer to [IHoldable.sol](contracts/IHoldable.sol) for the exact specification.
 
@@ -32,11 +34,11 @@ The standard implementation of ERC-20 has been changed in order to deduct the he
 
 #### transfer
 
-The standard implementation of ERC-20 has been changed in order to deduct the held balance from the ERC-20 balance. Any amount that is held can not be transferred.
+The standard implementation of ERC-20 has been changed in order to deduct the held balance from the ERC-20 balance. Any amount that is held cannot be transferred.
 
 #### transferFrom
 
-The standard implementation of ERC-20 has been changed in order to deduct the held balance from the ERC-20 balance. Any amount that is held can not be transferred.
+The standard implementation of ERC-20 has been changed in order to deduct the held balance from the ERC-20 balance. Any amount that is held cannot be transferred.
 
 ### Two Step Transfer (Clearable Transfer)
 
@@ -48,6 +50,11 @@ Please refer to [ITwoStepTransferableToken.sol](contracts/ITwoStepTransferableTo
 
 [Clearing-Wikipedia]: https://en.wikipedia.org/wiki/Clearing_(finance)
 
+### Cross Ledger Transfer
+
+Please refer to [ICrossLedgerLink.sol](contracts/ICrossLedgerLink.sol) for the exact specification.
+
+
 ### Compiling
 
 To compile the interfaces and the abstract contract, please execute: