Update readme example

Author: edubart

README.md

@@ -61,11 +61,11 @@ Or just copy the `bint.lua` file, the library is self contained in this single f
 ## Examples
 
 ```lua
-local bint = require 'bint'
-bint.scale(256) -- use 256 bit integers
+local bint = require 'bint'(256) -- use 256 bits integers
 local x = bint(1)
 x = x << 128
 print(x) -- outputs: 340282366920938463463374607431768211456
+assert(tostring(x) == '340282366920938463463374607431768211456')
 ```
 
 For more usage examples check the

examples/simple.lua

@@ -1,4 +1,4 @@
-local bint = require 'bint'(256)
+local bint = require 'bint'(1024) -- use 256 bits integers
 local x = bint(1)
 x = x << 128
 print(x) -- outputs: 340282366920938463463374607431768211456