Merge pull request #13 from robfig/master

Allow queries from PostGet
removed unused time import
Add ability to set fields as ignored.

The tag `db:"-"` will ignore a field.
Merge pull request #15 from traviscline/master

Add ability to ignore fields
add example of using tags to ignore a field
dialect: support quoting column names

Add support for quoting column names when generating queries. If a table
uses a reserved word for a column name (silly but happens) then there
will be a SQL error when trying to fetch a mapped struct.
dialect: add quoting to all column names
Add SelectInt/SelectNullInt/SelectStr/SelectNullStr functions
Add support for custom type converters.
add doc comments for TypeConverter and CustomScanner
Merge pull request #18 from ukplc/master

Support quoting column names
fix compilation error in CreateTables
Correct SQLite quoting