logging build steps to db
Merge pull request #17 from mrkrstphr/log-build-steps

logging build steps to db
save artifact info to artifacts table
adding Hash concept to store build metadata
these files weren't meant to exist
adding ability to remove a value from a hash
adding handling for mysql
Merge pull request #18 from mrkrstphr/build-metadata

Build metadata
Merge pull request #19 from mrkrstphr/save-artifact-info

save artifact info to artifacts table