added simple_json_test.py
updated to exclude PCMDI_METRICS
created parameter_files dir and mv files there
added filename and md5sum to build_obs_meta_dictionary.py
MISC edits...added CMIP_RESULTS_DIR and obs dir generation
updated python used in build_obs_meta_dictionary.py simple_json_test.py
### comments are attempt/failure to source CMIP5_results json files
Added zip files in CMIP5_results directory
Cleaned up gleckler1 pull request - HadISST stflf
Merge pull request #79 from durack1/gleckler1_sftlf_HadISST_fix

gleckler1 sftlf had isst fix @doutriaux is sitting next to me, and pressed <ENTER>