move unusedError and unusedRequest into init
removing unnecessary init function
updated comments and name
Merge pull request #21 from abursavich/master

Remove unused varaiables: unusedError and unusedRequest
Add travis.yml
Add Travis badge
Add go 1.2 to travis.yml
json v1 client/server: make it possible to pass JSON in an error field
Moved the content of v2/json/error.go to v2/json/server.go