Update README.md

Author: turuslan

README.md

@@ -2,7 +2,7 @@
 Avoid timers throttling by browser when tab is inactive
 
 # Usage:
-Place script reference to HackTimer.js (or HackTimer.min.js) before any other JavaScript
+Place script reference to **HackTimer.js** (or HackTimer.min.js) before any other JavaScript
 
 # Notes
 Loader code **HackTimer.js** (or HackTimer.min.js) may be placed in separate file or in script tag.