Title should default to schema property name

Use the option 'nototitle' to supress a title for a field.
Added ngModelOptions and global options

Global defaults can be set with "sf-options", among them
'formDefaults' useful for setting things like  ngModelOptions
and validationMessage for an entire form.
Bugfix for angular 1.2

$commitViewValue is 1.3 only...
Also updated bootstrap-example.html so it has a ng-submit that validates the entire form.
Fixed bug in dot binding for angular 1.2

The concatination with "model" lacked a dot.