Merge branch 'master' into PotatoPuree/HelloWorld

code/HelloHacktoberfest.sol

@@ -0,0 +1,10 @@
+pragma solidity ^0.4.20;
+
+// Hacktober greetings smart contract
+contract HelloHacktoberfest {
+  
+  function Hello() external view returns (string) {
+    return "Hello Hacktoberfest 2018!";
+  }
+  
+}