Support for 'point' type as a property
DDL support for POINT types
save support for point types
Adding a test to ensure that point properties are pulled from the database correctly
Merge branch 'spatial' of github.com:MipMapApp/node-orm2 into MipMapApp-spatial

* 'spatial' of github.com:MipMapApp/node-orm2:
  Adding a test to ensure that point properties are pulled from the database correctly
  save support for point types
  DDL support for POINT types
  Support for 'point' type as a property
Adds point support for all drivers (#221)

Changes unknown property type error to throw a well defined code
Changes Model.sync() to catch throwed errors and pass them to the callback
Changes test spec_helper.dropSync to return any sync error to callback
Updates tests for new point property to avoid drivers that don't support it (like sqlite) (#221)