Add TravisCI badge to readme.
Add gem badge.
- use URI from first onlineResource of resource citation as dataset URI
Merge remote-tracking branch 'origin/master'
Fix test
- use URI from first onlineResource of resource citation as dataset URI
- added 'version' command to CLI
- bump to version 0.8.2
Make CLI executable.
- added readme files in kramdown format for each reader and writer
- readme files will be used on websites to describe readers and writers
- added method to return path to readers and writers
- bump to version 0.8.3
Merge remote-tracking branch 'origin/master'
- renamed readme.txt to readme.md
- added adiwgJson_min_test_example.json to test/
- modified writer iso19115_2 class_metadata to handle missing missing metadata > metdataInfo blocks
- add methods to return content of readme files
- bumped to version 0.8.5
Add schema submodule, update test.

Added adiwg-josn-schemas v0.8.x submodule
Add minimum test
- allow non-ISO code names to be rendered in XML
- allow CLI option 'returnObject' to return full response from mdTranslator in JSON object
- added support for resource time period in adiwgJson
- bumped to version 0.8.7
 - added support for resourceType
 - removed metadataScope from metadataInfo mapped to hierarchyLevel in ISO
 - added resourceType to resourceInfo mapped to hierarchyLevel in ISO
 - added resourceType to associatedResource not mapped to ISO
 - returned initiativeType in associatedResource to original ISO meaning
 - added resourceType to additionalDocumentation not mapped to ISO
 - bumped to version 0.9.0
 - updated gemspec for adiwg-json-schemas and json-schemsa
Remove unnecessary test files.
Restore schema submodule v0_8