#312: README.md, add 'jQuery Validation' subsection
#312: README.md, initial definition on 'jQuery Validation'
#312: README.md, fix typo
#312: README.md, add 'additional documentation' on jQuery Validation
#312: README.md, reference 'form_validator.js'
#312: README.md, add 'Note'
#312: README.md, fix typo
#312: README.md, link text
#312: README.md, minor language change
#312: README.md, link text
Merge pull request #604 from jeff1evesque/doc_jquery_validation

#312: Documentation - 'jQuery Validation' Subsection