Created temporary wrapper classes to replace the check, instrument, merge, and reporting classes that were renamed.  This facilitates backwards compatability
Moved code from the main methods of instrument, merge, and report code into helper methods that don't use System.exit, and changed the main methods to call the helpers and do a System.exit based on the return code
Changed the baseDir in the dsl's Arguments and ArgumentsBuilder from a File that defaulted to the '.' directory, to a String that defaults to null to allow instrumenting files specified by an absolute path (Issue 179)
Changed the version number of all artifacts to 2.1.0-SNAPSHOT
Merge pull request #182 from stevesaliman/master

Fixes for issues 175 and 179. Version numbers changed to 2.1.0