Modify AutoUpdater behavior on macOS.

The AutoUpdater requires that macOS builds be code signed. That is currently not possible.
As a workaround, the autoupdater on mac will now alert users that an update is available and give the option to download the file directly from GitHub.
Closes #16.

app/assets/css/launcher.css

@@ -2099,6 +2099,8 @@ input:checked + .toggleSwitchSlider:before {
 
 /* Update action button styles. */
 #settingsUpdateActionButton {
+    display: flex;
+    flex-direction: column;
     padding-left: 10px;
     background: none;
     border: none;

app/assets/js/scripts/settings.js

@@ -1109,7 +1109,14 @@ function populateSettingsUpdateInformation(data){
         settingsUpdateChangelogTitle.innerHTML = data.releaseName
         settingsUpdateChangelogText.innerHTML = data.releaseNotes
         populateVersionInformation(data.version, settingsUpdateVersionValue, settingsUpdateVersionTitle, settingsUpdateVersionCheck)
-        settingsUpdateButtonStatus('Downloading..', true)
+        
+        if(process.platform === 'darwin'){
+            settingsUpdateButtonStatus('Download from GitHub<span style="font-size: 10px;color: gray;text-shadow: none !important;">Close the launcher and run the file to update.</span>', false, () => {
+                shell.openExternal(data.darwindownload)
+            })
+        } else {
+            settingsUpdateButtonStatus('Downloading..', true)
+        }
     } else {
         settingsUpdateTitle.innerHTML = 'You Are Running the Latest Version'
         settingsUpdateChangelogCont.style.display = 'none'

app/assets/js/scripts/uicore.js

@@ -47,6 +47,12 @@ if(!isDev){
                 break
             case 'update-available':
                 loggerAutoUpdaterSuccess.log('New update available', info.version)
+                
+                if(process.platform === 'darwin'){
+                    info.darwindownload = `https://github.com/WesterosCraftCode/ElectronLauncher/releases/download/v${info.version}/westeroscraftlauncher-${info.version}.dmg`
+                    showUpdateUI(info)
+                }
+                
                 populateSettingsUpdateInformation(info)
                 break
             case 'update-downloaded':