Setting up Huzzah ESP8266
If you´re working with a development board, they (usually) come with tow buttons: Reset and Flash. If this is the case before start to upload your code you must press the Flash button, this error is common when the Flash button it's not pressed. 

If you're working with an ESP8266-01 (this is the "naked" esp8266) you must read this tutorials: GreatScott vid on youtube, and for the connections: a good Hackster.io tutorial.

Hope you can make it run!!!