Merge pull request #832 from jeff1evesque/doc_json_schema

#677: README.md, minor grammatical changes
#312: README.md, minor language change
Merge pull request #833 from jeff1evesque/doc_jquery_validation

#312: README.md, minor language change
#312: README.md, link text
Merge pull request #834 from jeff1evesque/doc_jquery_validation

#312: README.md, link text
#677: README.md, link text