Fixed typo

Author: tangledbytes

README.md

@@ -9,8 +9,8 @@ The main id generation function is written in C++ using N-API which makes the pr
 for id generation also guaratees that the generated number will be of size 64 bits.
 
 ### NOTE
-The ID generator produces faster ids if the return type is bigint, but this option is disabled by default to the  
-time javascript bigint to string conversion will take. This conversion is thus by default handled by C++ internally.
+The ID generator produces faster ids if the return type is bigint, but this option is disabled by default because  
+of the time javascript bigint to string conversion will take. This conversion is thus by default handled by C++ internally.
 
 ## How to install