Sparkfun ESP8266 WiFi-Shield

The compiler does not recognize the library <SparkFunESP8266WiFI.h>

What the heck does that mean? It can find the library, or it can't. Either the library is properly written, so it is compilable (which I guess you might interpret as "recognizable"), or it isn't.

Post your code, as you were directed to do in the stickies at the top of the forum, which you clearly didn't bother to read, AND post the EXACT error messages.