Update README.md

Update install procedure

README.md

@@ -5,9 +5,17 @@
 1. `gem install bundler`
 1. `bundle`
 1. `rake db:create db:migrate db:seed`
-1. `rake`
+1. Download extJS (http://www.sencha.com/products/extjs), unzip, and place where ever you like.
+1. Link to your extJS folder path under `public/extjs`: (From app root) `ln -s /MY/PATH/extjs/ public/extjs`
 1. `rails s`
 
+# Optional
+ Add icons
+ 
+1. Download icons from http://www.famfamfam.com/lab/icons/silk/
+1. Link to the icons under `public/images/icons`: (From app root) `ln -s /MY/PATH/famfamfam_silk_icons/icons public/images/icons` 
+
+
 ## Mailcatcher
 
 Use mailcatcher to see what emails look like in development.