Updated bundle sizes

The current sizes are very misleading - the core is almost 4 times bigger than advertised.

Author: okydk

README.md

@@ -79,8 +79,8 @@ VueFormGenerator come in two version : `core` and `full`.
 Core is a more minimal version with only half the fields.
 Full is core + other fields.
 
-*   Full bundle: 75 kB (gzipped: 19 kB)
-*   Core bundle: 39 kB (gzipped: 11 kB)
+*   Full bundle: 172 kB (gzipped: 50 kB)
+*   Core bundle: 146 kB (gzipped: 41 kB)
 
 If you don't know what to choose, don't worry, the full is the default version.
 If you want the slim down version, here is the changes: