Made optionsObject an optional parameter. Changed variable name from schemaObject to optionsObject. Updated example.
Merge branch 'master' of github.com:jaypozo/validateCSV

* 'master' of github.com:jaypozo/validateCSV:
  Update README.md
  Update README.md
  Update README.md
  Update README.md

Merged because I changed README.md right on Github.