Add test-unit to test dependencies and rake to development deps
Convert date to actual time objects in blog post metadata
exclude the lib folder from being deployed
Test the posts metadata using Test::Unit and create a Rakefile for easier testing
Add TravisCI configuration
Add TravisCI badge to the Readme
Move the gsl gem to a production group and don't install it on travis
Check the _data/authors.yaml file
Add Travis CI information to Readme
Merge pull request #12 from segelgruppe/add_unit_tests

Added unit tests for YAML frontmatter and data files