README.md in nakal-0.0.1 vs README.md in nakal-0.0.2

@@ -21,22 +21,50 @@
 If you are using cucumber, include following Lines in your env.rb
 
 require "nakal/cucumber"
 
 Nakal.platform = :android
+
 Nakal.directory= "baseline_images/droid"
+
 Nakal.device_name = "samsung_galaxy_s3"
 
 and then put this line in your code where you want comparison to begin:
 
-nakal_execute("current_screen_name")
+diff = nakal_execute("current_screen_name")
 
 
-While executing, pass env variable NAKAL_MODE=build to build the baseline images
+While executing first time, pass env variable NAKAL_MODE=build to build the baseline images
 
 once baseline is built, next execution onwards, start using environment variable NAKAL_MODE=compare to compare against baseline
 
-This is currently beta and implemented for android only. iOs is work in progress
+
+For cropping the notification bar OR scroll bar, create a config/nakal.yml file in execution directory
+
+eg:
+
+put these contents in your nakal.yml file inside config/nakal.yml
+
+samsung_galaxy_s3:
+ 
+    top: 50
+ 
+    right: 18
+ 
+    left: 0
+ 
+    bottom: 0
+
+nexus7:
+ 
+    top: 74
+ 
+    right: 20
+ 
+    left: 0
+ 
+    bottom: 0
+
 
 ## Contributing
 
 1. Fork it ( http://github.com/<my-github-username>/nakal/fork )
 2. Create your feature branch (`git checkout -b my-new-feature`)