How can I use a button to add +1 to a field using AngularJS?

I am trying to learn AngularJS. For my first project I want to create a small scorekeeping application. I am taking data from a JSON file then I want to update it on the screen depending on who scores.

I can't seem to figure out how to update the specific goal field using Angular. My current application pushes a new row to the scoresheet:

'use strict';

/* Controllers */

function ScoreKeeper($scope, $http) {

  $http.get('json/hometeam.json').success(function(data) {
    $scope.hometeam = data;
  });

  $scope.addGoal = function() {
    $scope.hometeam.push({goals: +1});
  };
}

This is the table I am currently using:

    <table class="table table-hover">
        <thead>
            <th>Player ID</th>
            <th>No.</th>
            <th>Name</th>
            <th>GP</th>
            <th>G</th>
            <th>A</th>
            <th>PIM</th>
            <th>Goal</th>
            <th>Assist</th>
            <th>Assist</th>
        </thead>
        <tbody>
            <tr ng-repeat="player in hometeam" >
                <td>{{player.playerid}}</td>
                <td>{{player.no}}</td>
                <td>{{player.name}}</td>
                <td>{{player.gp}}</td>
                <td>{{player.goals}}</td>
                <td>{{player.assists}}</td>
                <td>{{player.pim}}</td>
                <td><button class="btn btn-small" name="add-goal" type="button" ng-click="addGoal()"><i class="icon-plus"></i></button></td>                
            </tr>
        </tbody>
    </table>

I want to be able to click addGoal for the specific player, and then update their goal total. Right now, the current function is creating a new row with goal being 1 and all the other fields are empty.

I'm quite lost on this one, the data is rendering correctly on refresh, however, my update function is not. I know .push() is not the correct method, however I can't seem to find a good resource for Angular to figure out what would be the right method to use. Any help is greatly appreciated. Thank you.