Convert name to symbol for field lookup.
Fix failing specs.
Set default encoding  for csv file.
Add initial reporting support.
Remove require pry.
Ability to map to a method on the class (ala rails)

This change is backwards incompatible as it changes the arguments
to field to be a hash rather than an symbol or proc
Remove debugging
Tidy up reporting
Merge pull request #4 from jobready/feature/simple-reporting

Add rudimentary import report.
Update README.md
Merge pull request #5 from jobready/feature/mapping

Ability to map to a method on the class (ala rails)
Merge pull request #1 from jobready/develop

merge changes