Beefed up docs/model-api.txt -- added a significant amount of documentation, links to example models and formatting changes
Beefed up docs/model-api.txt -- added a significant amount of documentation, links to example models and formatting changes

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@560 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django