fixed example code
Include scope.TableName() in ORDER statement for First() & Last()
Merge pull request #89 from dukex/patch-1

fixed example code
Fix typos
Merge pull request #90 from xdmnl/master

Fix ORDER BY "id" is ambiguous
fix minor grammar issues and broken header link in README.md
Merge pull request #92 from bruston/patch-1

fix minor grammar issues and broken header link in README.md
Merge branch 'master' of https://github.com/jinzhu/gorm