Translating plaintext tech radar data into json

Data comes from http://www.thoughtworks.com/radar
Data is scraped by hand and may have errors
In the January 2010 data set, items between two zones are marked in the data set as in the outer zone of the two they straddle.

Goals: 
turn data into json which can be worked with by others
enable future turning of data into json
see "current" recommendations by aggregating old recommendations

example of current data structure:
{"Google Dart"=>
	{ #<Date: 2012-03-01 ((2455988j,0s,0n),+0s,2299161j)>=>
		{ "category"=>"Languages", 
		  "number"=>"103", 
		  "recommendation"=>"Hold"
		}
	}
},
{"Logic in stored procedures"=>
	{ #<Date: 2012-03-01 ((2455988j,0s,0n),+0s,2299161j)>=>
		{ 	"category"=>"Languages", 
			"number"=>"104", 
			"recommendation"=>"Hold"
		}
	}
}

Usage:

Options:
  --root, -r <s>:   Folder containing radars (default: radars)
      --json, -j:   json
       --csv, -c:   csv
      --help, -h:   Show this message

There are about 475 total radar items in the current data set (2010-01 to 2012-03)

Other projects related to the ThoughtWorks radar:
https://github.com/badrij/radddar
https://github.com/bdargan/techradar
https://github.com/vitorbaptista/techradar
https://github.com/nsriram/Gumba