readd ; to Ballot

src/app/example-contracts.js

 'use strict'
 
-var ballot = `pragma solidity ^0.4.0
+var ballot = `pragma solidity ^0.4.0;
 contract Ballot {
 
     struct Voter {
-        uint weight
-        bool voted
-        uint8 vote
-        address delegate
+        uint weight;
+        bool voted;
+        uint8 vote;
+        address delegate;
     }
     struct Proposal {
-        uint voteCount
+        uint voteCount;
     }
 
-    address chairperson
-    mapping(address => Voter) voters
-    Proposal[] proposals
+    address chairperson;
+    mapping(address => Voter) voters;
+    Proposal[] proposals;
 
     /// Create a new ballot with $(_numProposals) different proposals.
     function Ballot(uint8 _numProposals) {
-        chairperson = msg.sender
-        voters[chairperson].weight = 1
-        proposals.length = _numProposals
+        chairperson = msg.sender;
+        voters[chairperson].weight = 1;
+        proposals.length = _numProposals;
     }
 
     /// Give $(voter) the right to vote on this ballot.
     /// May only be called by $(chairperson).
     function giveRightToVote(address voter) {
-        if (msg.sender != chairperson || voters[voter].voted) return
-        voters[voter].weight = 1
+        if (msg.sender != chairperson || voters[voter].voted) return;
+        voters[voter].weight = 1;
     }
 
     /// Delegate your vote to the voter $(to).
     function delegate(address to) {
-        Voter sender = voters[msg.sender] // assigns reference
-        if (sender.voted) return
+        Voter sender = voters[msg.sender]; // assigns reference
+        if (sender.voted) return;
         while (voters[to].delegate != address(0) && voters[to].delegate != msg.sender)
-            to = voters[to].delegate
-        if (to == msg.sender) return
-        sender.voted = true
-        sender.delegate = to
-        Voter delegate = voters[to]
+            to = voters[to].delegate;
+        if (to == msg.sender) return;
+        sender.voted = true;
+        sender.delegate = to;
+        Voter delegate = voters[to];
         if (delegate.voted)
-            proposals[delegate.vote].voteCount += sender.weight
+            proposals[delegate.vote].voteCount += sender.weight;
         else
-            delegate.weight += sender.weight
+            delegate.weight += sender.weight;
     }
 
     /// Give a single vote to proposal $(proposal).
     function vote(uint8 proposal) {
-        Voter sender = voters[msg.sender]
-        if (sender.voted || proposal >= proposals.length) return
-        sender.voted = true
-        sender.vote = proposal
-        proposals[proposal].voteCount += sender.weight
+        Voter sender = voters[msg.sender];
+        if (sender.voted || proposal >= proposals.length) return;
+        sender.voted = true;
+        sender.vote = proposal;
+        proposals[proposal].voteCount += sender.weight;
     }
 
     function winningProposal() constant returns (uint8 winningProposal) {
-        uint256 winningVoteCount = 0
+        uint256 winningVoteCount = 0;
         for (uint8 proposal = 0; proposal < proposals.length; proposal++)
             if (proposals[proposal].voteCount > winningVoteCount) {
-                winningVoteCount = proposals[proposal].voteCount
-                winningProposal = proposal
+                winningVoteCount = proposals[proposal].voteCount;
+                winningProposal = proposal;
             }
     }
 }`