g_get_user_runtime_dir provides since 2.28, Closes #144
Update docs
Implement gtk_settings_get_default
Implement a Settings to GObject Converter

This allows for GObject methods to be called on Settings objects.

In C:
	GtkSettings *default_settings = gtk_settings_get_default();
	g_object_set(default_settings, "gtk-button-images", TRUE, NULL);

In Go:
	var settings *glib.GObject = gtk.SettingsGetDefault().ToGObject()
	settings.Set("gtk-button-images", true)
Merge pull request #162 from idealeric/master

Some Method Implementations
Fix GetAllocation() Mechanism
Merge pull request #163 from idealeric/master

Fix GetAllocation() Mechanism
Add GdkPixbuf Scaling
Add GdkPixbuf GetHeight() and GetWidth()
Add ModifyFG()
Merge pull request #164 from idealeric/master

Some GdkPixbuf Stuff
Add GtkTreeRowReference
Merge pull request #166 from idealeric/treerow

GtkTreeRowReference Stuff
Fixes hierarchy of gdkpixbuf. Fixes #167
Modify example for locale
Fixes glib object references
Use fmt.Println instead of println
gofmt
Add TreeSortable
Merge pull request #169 from idealeric/sortable

Add TreeSortable