Readme fixes
added empty string as default value test
Default Empty String from kay.one s Branch
Merged some SQL CE changes from https://bitbucket.org/ToddRopog/migratordotnet
* Added support for SQL CE 4.0 and Adding of Indexes
 from kay.one
Connection string is now part of ITransformationProvider
Added support for database management (Create, Drop, List)
 frm kay.one
Added support for multiple schemas to oracle provider
 from nathan lee