From e3aa05a6eccbcbc941cca12da1d958adb9862e09 Mon Sep 17 00:00:00 2001
From: Richard Ramos <info@richardramos.me>
Date: Mon, 26 Nov 2018 08:51:22 -0400
Subject: [PATCH 1/3] Update README.md

---
 README.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 89a2212..3941ac9 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # hackathon-registration-dapp
 
+### Prerequisites:
+- Geth, IPFS and Embark installed
+
 ### Installation:
 
 ```
@@ -17,7 +20,7 @@ A nodejs service was created to receive funding requests. It requires a geth lig
 1. Edit `server/config.js` and set the contract address and the private key of the controller address.
 2. `node server/main.js`
 
-### Running the dapp.
+### Running the dapp in a development environment
 0. `embark run`
 1. Browse  http://localhost:8000/index.htm?CODE_TO_REDEEM
 

From 2710d7bfc947c9d92b01c1ab43acafd307dd0232 Mon Sep 17 00:00:00 2001
From: Richard Ramos <info@richardramos.me>
Date: Mon, 26 Nov 2018 08:55:30 -0400
Subject: [PATCH 2/3] Added function to only retrieve funds

---
 contracts/SNTGiveaway.sol | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/contracts/SNTGiveaway.sol b/contracts/SNTGiveaway.sol
index 02e4cdb..f266dac 100644
--- a/contracts/SNTGiveaway.sol
+++ b/contracts/SNTGiveaway.sol
@@ -1039,6 +1039,13 @@ contract SNTGiveaway is Controlled {
         require(SNT.transfer(msg.sender, sntBalance), "Transfer did not work");
         selfdestruct(msg.sender);
     }
+    
+    /// @notice Extract balance in ETH + SNT from the contract
+    function retrieveFunds() public onlyController {
+        uint sntBalance = SNT.balanceOf(address(this));
+        require(SNT.transfer(msg.sender, sntBalance), "Transfer did not work");
+        selfdestruct(msg.sender);
+    }
 
 
     function() public payable {

From 6f7a153ce535e1780708f0cd09f2465275ccf06e Mon Sep 17 00:00:00 2001
From: Richard Ramos <info@richardramos.me>
Date: Mon, 26 Nov 2018 08:56:14 -0400
Subject: [PATCH 3/3] Fixed deprecated buffer creation

---
 server/codegen.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/codegen.js b/server/codegen.js
index 3fba99c..aa794a9 100644
--- a/server/codegen.js
+++ b/server/codegen.js
@@ -13,7 +13,7 @@ for(i = 0; i < numCodes; i++){
     const code = crypto.randomBytes(codeLength).toString('hex');
 
     codes.push(code);
-    elements.push(sha3(new Buffer(code, 'hex')));
+    elements.push(sha3(Buffer.from(code, 'hex')));
 }
 
 const merkleTree = new MerkleTree.default(elements);