Update readme.markdown

Author: Kamil93

readme.markdown

@@ -198,9 +198,10 @@ with the number of bytes in the bundle X and the time in seconds Y.
 
 # working with browserify transforms
 
-If your custom transform for browserify adds new files to bundle in a non-standard way without requiring.
-You can inform Watchify about these files by emiting 'file' event.
+If your custom transform for browserify adds new files to the bundle in a non-standard way without requiring.
+You can inform Watchify about these files by emiting a 'file' event.
 
+```
 module.exports = function(file) {
   return through(
     function(buf, enc, next) {
@@ -214,6 +215,7 @@ module.exports = function(file) {
     }
   );
 };
+```
 
 # install