fix outdated readme links (#48)

* fix outdated readme links

* add branch and release notes to readme

Author: nonergodic

README.md

@@ -6,12 +6,24 @@ For off-chain code, please refer to the [TypeScript SDK](https://github.com/worm
 
 This SDK was originally created for integrations with the WormholeRelayer and then expanded to cover all integration.
 
+## Releases
+
+> License Reminder
+>
+> The code is provided on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+>
+> So make sure you check / audit any code you use before deploying to mainnet.
+
+The `main` branch is considered the nightly version of the SDK. Stick to tagged releases for a stable experience.
+
+**Note: The SDK is currently on its way to a version 1.0 . Proceed with extra caution until then.**
+
 ## Installation
 
 **Foundry and Forge**
 
 ```bash
-forge install wormhole-foundation/wormhole-solidity-sdk
+forge install wormhole-foundation/wormhole-solidity-sdk@v0.1.0
 ```
 
 **Solc Version**
@@ -42,14 +54,18 @@ Delivery providers provide a quote for the cost of a delivery on the source chai
 
 - Includes interfaces to interact with contracts in the Wormhole ecosystem ([src/interfaces](https://github.com/wormhole-foundation/wormhole-solidity-sdk/tree/main/src/interfaces))
 - Includes the base class ‘Base’ with helpers for common actions that will typically need to be done within ‘receiveWormholeMessages’:
-  - [`onlyWormholeRelayer()`](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/Base.sol#L24): Checking that msg.sender is the wormhole relayer contract
-    Sometimes, cross-chain applications may be set up such that there is one ‘spoke’ contract on every chain, which sends messages to the ‘hub’ contract. If so, we’d ideally only want to allow messages to be sent from these spoke contracts. Included are helpers for this:
+  - [`onlyWormholeRelayer()`](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/Base.sol#L9): Checking that msg.sender is the wormhole relayer contract
+    Sometimes, Cross-chain applications may be set up such that there is one ‘spoke’ contract on every chain, which sends messages to the ‘hub’ contract. If so, we’d ideally only want to allow messages to be sent from these spoke contracts. Included are helpers for this:
 
     - [`setRegisteredSender(uint16 sourceChain, bytes32 sourceAddress)`](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/Base.sol#L45): Setting the specified sender for ‘sourceChain’ to be ‘sourceAddress’
     - [`isRegisteredSender(uint16 sourceChain, bytes32 sourceAddress)`](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/Base.sol#L30): Checking that the sender who requested the delivery is the registered address for that chain
 
-- Included are also the ‘[TokenSender](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/TokenBase#L36)’ and ‘[TokenReceiver](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/TokenBase.sol#L126)’ base classes with helpers for smart contracts that wish to send and receive tokens using Wormhole’s TokenBridge. See ‘[HelloToken](https://github.com/wormhole-foundation/hello-token)’ for example usage.
-- Included are also the ‘[CCTPSender](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/CCTPBase#L59)’ and ‘[CCTPReceiver](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/CCTPBase.sol#L177)’ base classes with helpers for smart contracts that wish to send and receive both tokens using Wormhole’s TokenBridge as well as USDC using CCTP. See ‘[HelloUSDC](https://github.com/wormhole-foundation/hello-usdc)’ for example usage.
-- Included are helpers that help set up a local forge testing environment. See ‘[HelloWormhole](https://github.com/wormhole-foundation/hello-wormhole)’ for example usage.
+    Look at test/Counter.t.sol for an example usage of Base
+    
+- Included are also:
+  - The ‘[TokenSender](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/TokenBase.sol#L24)’ and ‘[TokenReceiver](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/TokenBase.sol#L158)’ base classes with helpers for smart contracts that wish to send and receive tokens using Wormhole’s TokenBridge. See ‘[HelloToken](https://github.com/wormhole-foundation/hello-token)’ for example usage.
+  - The ‘[CCTPSender](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/CCTPBase.sol#L59)’ and ‘[CCTPReceiver](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/CCTPBase.sol#L177)’ base classes with helpers for smart contracts that wish to send and receive both tokens using Wormhole’s TokenBridge as well as USDC using CCTP. See ‘[HelloUSDC](https://github.com/wormhole-foundation/hello-usdc)’ for example usage.
+  - Or a combination of both - [CCTPAndTokenBase](https://github.com/wormhole-foundation/wormhole-solidity-sdk/blob/main/src/WormholeRelayer/CCTPAndTokenBase.sol).
+  - Helpers for setting up a local forge testing environment. See ‘[HelloWormhole](https://github.com/wormhole-foundation/hello-wormhole)’ for example usage.
 
 **Note: This code is meant to be used as starter / reference code. Feel free to modify for use in your contracts, and also make sure to audit any code used from here as part of your contracts before deploying to mainnet.**