modernizing this project
gitignore
more project fixes
added a definition for the 850 interchange
rearranged .xml files.  changed find routine to adapt.
Update README.md
added single transaction for 850-4010
changed the interchange name and added rake task for specs
updated gemspec
Added additional header info to 850 interchange
added the reference element and reduced redundant xml
added support for 856 and 810
added support for 855 and refactored 850
added a generic 4010 interchange parser
Fixed gemspec
Added ref segment for IM
upgraded to ruby 2.1.0
Merge pull request #1 from medSage/sfour-1438-im_dropship

Sfour 1438 im dropship