Fixes issue with HTTP post under Ruby 1.9.3
Verion bump

Adds CHANGELOG.
Verion bump (0.1.7) to gemspec
Fix to make rake works even with Rake > =10
Rebuilt gemspec for 0.1.7
Fix to make it works with Ruby 1.9.3
Merge pull request #1 from knightq/master

Ruby 1.9.3