Update src/sqlkorma/examples/db-intro.clj
  Added helpers for h2 and msaccess in the list of helpers.
  Changed the order of the example. Now first we define the connection map
  with and without the helpers and only later define the connection.
Update src/sqlkorma/examples/gettingstarted.clj
  Bump the korma version.
  Updated the postgres jdbc driver.
  Added examples of drivers for h2 and sqlite.
Update src/sqlkorma/examples/entities.clj
  The example works now. If you type it on a repl it order it won't
  give any errors.
  Added many-to-many example
  Added prepare and transform function examples.
  Tried to simplify the example moving some non default configurations
  to other entities.
Update src/sqlkorma/examples/selects.clj
  This also works on a repl but you have to prepare a database first,
  creating the tables with the right columns.
  Added a many to many relationship.
  Added a modifier example.
  Added stdev to the aggregates.
  Added a having example.
Update src/sqlkorma/examples/where.clj
  This examples also work without the database.
  Added as-sql example and explanation.
  Added a note telling that what goes for where also goes for having.
  Update predicate list to include between.
Update src/sqlkorma/examples/with.clj
  Changed the fields and conditions to make the example work.
new file:   src/sqlkorma/examples/set.clj
  Add union, union-all and intersect example.
  Add union composed example.
  Add queries example.
Update src/sqlkorma/examples/update.clj
  Change the example to make it work.
Cosmetic changes.
Update src/sqlkorma/examples/delete.clj
Changed the example to make it work.
Update src/sqlkorma/examples/raw.clj
  Changed the example to make it work.

Update src/sqlkorma/examples/transactions.clj
  Changed the first example to make it work.
Update src/sqlkorma/views/docs.clj
Added a description of the tables and relationships before creating the
entities.
Added (modifier), (having) explanation.
Added set operation section.
Changed the API link to http://korma.github.io/Korma/
Update src/sqlkorma/models/examples.clj
Added new korma vars and clojure-vars.
Merge pull request #6 from mynomoto/docs-update

Docs update