Merge pull request #3 from fernandes/change_from_direct_to_group

Until some time ago this year, the extraneous option `direct:` worked, but then a check was added to not allow extra options and the feature has been broken ever since.

I love your way around it. Perfect hack! Merging it in.

Author: shageman

Diff for: README.md

@@ -15,6 +15,22 @@ And then execute:
 Or install it yourself as:
 
     $ gem install cobradeps
+    
+### Dependencies
+
+You need [Graphviz](http://graphviz.org/) to generate the graph.png
+
+#### OS X
+
+If you're using OS X and homebrew, you just need to:
+
+```bash
+brew install graphviz
+```
+
+#### Other Operating Systems
+
+For more information about installation on other operating systems, just check [Graphviz Download Page](http://graphviz.org/Download..php)
 
 ## Usage
 

Diff for: lib/cobradeps/gemfile_scraper.rb

@@ -85,7 +85,7 @@ def path
       end
 
       def direct
-        match = @options.match(/direct(?:\s*=>|:)\s+true/)
+        match = @options.match(/group(?:\s*=>|:)\s+:direct/)
         match ? {direct: true} : {}
       end
     end

Diff for: spec/examples/letters/A/Gemfile

@@ -38,7 +38,7 @@ gem 'spring',        group: :development
 # Use debugger
 # gem 'debugger', group: [:development, :test]
 
-gem "B", path: "../B", direct: true
+gem "B", path: "../B", group: :direct
 gem "C", path: "../C"
 gem "D", path: "../D"
 gem "E1", path: "../E1"