Update README.md

Former-commit-id: 7314f2a6373b83859229b85f2cd0f0c9ca51c0a7

README.md

@@ -3,7 +3,7 @@ ImageProcessor
 
 [![Build status](https://ci.appveyor.com/api/projects/status/8ypr7527dnao04yr)](https://ci.appveyor.com/project/JamesSouth/imageprocessor)
 
-Imageprocessor is a lightweight library written in C# that allows you to manipulate images on-the-fly using .NET 4.0.
+Imageprocessor is a lightweight library written in C# that allows you to manipulate images on-the-fly using .NET 4.5+
 
 It's fast, extensible, easy to use, comes bundled with some great features and is fully open source.
 
@@ -28,8 +28,8 @@ I want the next version of ImageProcessor to run on all devices. Sadly it looks
 ImageProcessor's documentation, included in this repo in the gh_pages directory, is built with [Jekyll](http://jekyllrb.com) and publicly hosted on GitHub Pages at <http://imageprocessor.org>. The docs may also be run locally.
 
 ### Running documentation locally
-1. If necessary, [install Jekyll](http://jekyllrb.com/docs/installation) (requires v1.5.x).
+1. If necessary, [install Jekyll](http://jekyllrb.com/docs/installation) (requires v2.2.x).
   - **Windows users:** Read [this unofficial guide](https://github.com/juthilo/run-jekyll-on-windows/) to get Jekyll up and running without problems. 
 2. From the root `/ImageProcessor` directory, run `jekyll serve` in the command line.
 3. Open <http://localhost:4000> in your browser to navigate to your site.
-Learn more about using Jekyll by reading its [documentation](http://jekyllrb.com/docs/home/).
+Learn more about using Jekyll by reading its [documentation](http://jekyllrb.com/docs/home/).