README : revise git instructions

README.mdown

@@ -23,11 +23,11 @@ You can download a zip of all the flat HTML files from [http://meta.metafizzy.co
 
 ### Via Jekyll
 
-The documentation and demo pages are generated using [Jekyll](http://github.com/mojombo/jekyll/wiki). With Jekyll installed, you can clone this repo and start Jekyll. From Terminal:
+The documentation and demo pages are generated using [Jekyll](http://github.com/mojombo/jekyll/wiki). With Jekyll installed, you can clone this repo and run Jekyll from Terminal:
 
-    $ git clone git@github.com:desandro/isotope.git
-    $ cd isotope/
-    $ jekyll --server --auto
+    git clone https://github.com/desandro/isotope.git
+    cd isotope/
+    jekyll --server --auto
 
 Then view the live site at [http://localhost:4000](http://localhost:4000).