Fix typo, Mention GFM

README.md

@@ -1,5 +1,5 @@
 # SimpleMDE - Markdown Editor
-A drop-in JavaScript textarea replacement for writing beautiful and understandable markdown. The WYSIWYG-esque editor allows users who may be less experienced with Markdown to use familiar toolbar buttons and shortcuts. In addition, the syntax is rendered while editing to clearly show the expected result. Headings are larger, emphasized words are italicized, links are underlined, etc. SimpleMDE is one of the first editors to feature both built-in autosaving and spell checking.
+A drop-in JavaScript textarea replacement for writing beautiful and understandable Markdown. The WYSIWYG-esque editor allows users who may be less experienced with Markdown to use familiar toolbar buttons and shortcuts. In addition, the syntax is rendered while editing to clearly show the expected result. Headings are larger, emphasized words are italicized, links are underlined, etc. SimpleMDE is one of the first editors to feature both built-in autosaving and spell checking.
 
 [**Demo**](http://nextstepwebs.github.io/simplemde-markdown-editor)
 
@@ -168,7 +168,7 @@ simplemde.codemirror.on("change", function(){
 ## How it works
 SimpleMDE is an improvement of [lepture's Editor project](https://github.com/lepture/editor) and includes a great many number of changes. It is bundled with [CodeMirror](https://github.com/codemirror/codemirror) and depends on [Font Awesome](http://fortawesome.github.io/Font-Awesome/).
 
-CodeMirror is the backbone of the project and parses much of the Markdown syntax as it's being written. This allows us to add styles to the Markdown that's being written. Additionally, a toolbar and status bar have been added to the top and bottom, respectively. Previews are rendered by [Marked](https://github.com/chjj/marked).
+CodeMirror is the backbone of the project and parses much of the Markdown syntax as it's being written. This allows us to add styles to the Markdown that's being written. Additionally, a toolbar and status bar have been added to the top and bottom, respectively. Previews are rendered by [Marked](https://github.com/chjj/marked) using GFM.
 
 ## What's changed?
 As mentioned earlier, SimpleMDE is an improvement of [lepture's Editor project](https://github.com/lepture/editor). So you might be wondering, what's changed? Quite a bit actually. Here's some notable changes: