Fixed #44 Getting .NET type after using luanet.import_type
Added MonoLuaInterface samples.
Fix: convert string to char[].
Fixed KopiLua using. https://github.com/NLua/NLua/commit/079b7966245cccb42c563abeb19290459e10934e#L1R35
Merge remote-tracking branch 'upstream/master'