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

- old
+ new

@@ -1,8 +1,9 @@
 # Screenshots
 
-TODO: Write a gem description
+This gem takes a list of URLs, gets the title of each page at those URLs, then builds an HTML string that can be copied-pasted in a blog article to present those web pages.
+It assumes screenshots of those pages would have been uploaded on the blog.
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -27,9 +28,13 @@
   config.image_extension = 'jpg'
 end
 ```
 
 ## Usage
+
+### Directly call the binary
+
+    $ screenshots my-input-file.txt my_output_dir
 
 ### Generate HTML for a single URL
 
 ```ruby
 Screenshots::Processor.generate('http://www.google.com')