README.markdown in humanize-2.4.3 vs README.markdown in humanize-2.5.0

@@ -92,9 +92,10 @@
 * Thai: `:th`
 * Russian: `:ru` (except for decimals)
 * Portuguese: `:pt`
 * Malaysia `:ms`
 * Japanese `:jp`
+* Vietnamese `:vi`
 
 ## Testing
 
 Install development dependencies by running `bundle install`.