Merge pull request #1 from FreekDB/master

Updated README.md and added generated sources (created by running Ant on the build.xml file).
Added 3 example files: minimal and maximal features and one from the web
Merge pull request #2 from FreekDB/master

Added functionality for exporting to files
Reverted changes back to the original REDCap-to-i2b2 for two files.
Fixed small typing error.