Solve Bundler source deprecation issues
Support Ruby 1.8 hash syntax

Previous code was using Ruby 1.9.x Hash syntax and causing build
failures in the CI environment (Travis).
Use Ruby 1.8 Hash syntax in specs too

Missed another spot with usage of 1.9.x Hash syntax.
Merge pull request #116 from area17/ruby18-syntax

Correct Ruby 1.9 Hash syntax (@area17, #116)