suggestions (style) for ``polyglossia-tibt``
Merge pull request #4 from phi-gamma/master

suggestions
Adding support for XeTeX

Currently, LuaTeX and XeTeX are at the same level, now we'll try justification...
Impriving tibetan with XeTeX a bit, cleanup on tibetan lua
Merge pull request #44 from eroux/master

XeTeX support for Tibetan