Update GFlashText.as

there is no need of "-1", just test your code with this:

textField.text = "a";
        if(textField.text.length > 0){
            textField.setTextFormat(new TextFormat(), 0, textField.length - 1);
        }
        textField.text = "_";

you'll get RTE:

[Fault] exception, information=RangeError: Error #2006: The supplied index is out of bounds.
at flash.text::TextField/setTextFormat()
Fixed for negative scale transformations.
Update to latest 0.9.3.1195
Merge pull request #6 from vaukalak/patch-1

Update GFlashText.as
GNode sources added
Changes to API with Haxe context

Complete source changes to work with the new Haxe Genome2D context
Update README.md
Context API updates
Extension sources added
various fixes
fixes
Xml/XML fixes
239 API updates
Removed obsolete file
subtexture creation fix
Mouse events fixes
native mouse capture
autoUpdateAndRender
244 changes
246 build synch