Merge pull request 'Make Kredits undivisible' (#227) from feature/undivisible into master

Reviewed-on: #227

contracts/Token.sol

@@ -20,7 +20,11 @@ contract Token is Initializable, ERC20Upgradeable {
   event LogMint(address indexed recipient, uint256 amount, uint32 contributionId);
 
   function initialize() public virtual initializer {
-    __ERC20_init('Kredits', 'KS');
+    __ERC20_init("Kredits", "KS");
+  }
+
+  function decimals() public view virtual override returns (uint8) {
+    return 0;
   }
 
   function setContributionContract(address contribution) public {
@@ -36,8 +40,7 @@ contract Token is Initializable, ERC20Upgradeable {
     require(contributionContract == msg.sender, "Only Contribution");
     require(amount > 0, "INVALID_AMOUNT");
 
-    uint256 amountInWei = amount.mul(1 ether);
-    _mint(contributorAccount, amountInWei);
+    _mint(contributorAccount, amount);
     emit LogMint(contributorAccount, amount, contributionId);
   }