{
	"apiUrl": "http://localhost:9000/api/",
	"domain": "http://localhost:3001",
	"twitterConsumerKey": "KEY_HERE",
	"twitterConsumerSecret": "KEY_HERE",
	"twitterCallbackUrl": "http://localhost:3000/auth/twitter/callback",
	"oauthProxyUrl": "http://localhost:3002/oauthproxy",
	"oauthProxyRedirectUrl": "http://localhost:3002/proxy",
	"oauthProxyPort": "3002",
	"gulpDevExpressPort": "3001",
	"linkDebuggingServicePort": "8061",
}

{
	"apiUrl": "http://localhost:9000/api/",
	"domain": "http://localhost:3001",
	"twitterConsumerKey": "KEY_HERE",
	"twitterConsumerSecret": "KEY_HERE",
	"twitterCallbackUrl": "http://localhost:3000/auth/twitter/callback",
	"oauthProxyUrl": "http://localhost:3002/oauthproxy",
	"oauthProxyRedirectUrl": "http://localhost:3002/proxy",
	"oauthProxyPort": "3002",
	"gulpDevExpressPort": "3001",
	"linkDebuggingServicePort": "8061"
}

Remove extra colon causing syntax error.
Remove extra colon causing syntax error.