build: temporarily disable safari 10 browserstack tests

Author: devversion

test/browser-providers.js

@@ -28,7 +28,9 @@ const browserConfig = {
   'Safari7':           { unitTest: {target: null, }},
   'Safari8':           { unitTest: {target: null, }},
   'Safari9':           { unitTest: {target: null, }},
-  'Safari10':          { unitTest: {target: 'browserstack', }},
+  // TODO(devversion): temporarily disabled until BrowserStack fixes an issue
+  // where Safari browsers cannot be launched due to a missing `device'.
+  // 'Safari10':          { unitTest: {target: 'browserstack', }},
   'iOS7':              { unitTest: {target: null, }},
   'iOS8':              { unitTest: {target: null, }},
   'iOS9':              { unitTest: {target: null, }},