Merge pull request #16 from ericdill/devel

MNT: Fixed bugs in type/value validation in search()
ENH: Copy dataBroker.conf to user home directory when setup.py is run
get_data_keys() added to metadataStore.analysisapi.utility. Given a header, data keys are returned
MNT: Fixed get_data_keys to return actual data keys
Event field validity check added to metadataStore.analysis.utility.get_data_keys()
Updated frame_hdr_events.txt to reflect current state of run header
Updated frame_hdr_events.txt to reflect current state of run header
Merge remote-tracking branch 'canon/devel' into devel
ENH: Added proposal for run header formatting
MNT: Not sure what this difference is...