Added support for changing SQL Server schema on which the table are c…

[RemiBou]

…reated Issue#26

[damienbod]

@RemiBou super, thanks. I'll integrate it on Friday, create the new package and update the docs. Thanks

[RemiBou]

Perfect thank you !

[damienbod]

https://www.nuget.org/packages/Localization.SqlLocalizer/1.0.7

services.AddLocalizationSqlSchema("translations");
services.AddDbContext<LocalizationModelContext>(options =>
  options.UseSqlite(
       sqlConnectionString,
       b => b.MigrationsAssembly("AspNet5Localization")
  )
);

thanks for the pull-request