Add gemspec features
Add Rakefile
Add RSpec support
Update test context definition
Update Rakefile
Update .gitignore for '.ruby-version' file
Update version spec
Add String refinement to remove unwanted spaces
Update license header
Update license header
Add module to extract single node set data from xml source
Code refactoring
Extended data extracted from node set data
Code refactoring
Change vr and vm data representation
Fix data extraction for missing field
Add support for 'multiple tag' extraction (e.g '(60xx,0040)')
Code refactoring
Code refactoring
Code refactoring