Update Readme.md

Readme.md

@@ -6,7 +6,7 @@
 
     $ npm install consolidate
 
-## Supported Express version
+## Supported Express versions
 
   - [Espress 4.x](https://expressjs.com/fr/4x/api.html)
   - [Express 3.x](https://expressjs.com/fr/3x/api.html)
@@ -115,7 +115,7 @@ cons.swig('views/page.html', { user: 'tobi' })
 
  To enable caching simply pass `{ cache: true }`. Engines _may_ use this option to cache things reading the file contents, compiled `Function`s etc. Engines which do _not_ support this may simply ignore it. All engines that consolidate.js implements I/O for will cache the file contents, ideal for production environments.
  When using consolidate directly: `cons.swig('views/page.html', { user: 'tobi', cache:true }, callback);`
- Using Express or higher: `app.locals.cache = true` or set NODE_ENV to 'production' and Express will do this for you.
+ Using supported Express versions: `app.locals.cache = true` or set NODE_ENV to 'production' and Express will do this for you.
 
 ## Express example