signed net35, net40 and net 45
Merge pull request #9 from prabirshrestha/signed

signed net35, net40 and net 45 assemblies
Bumped Lua
Updated KeraLua to build using Xamarin Studio instead MonoDevelop
Added Android support.
Bumped version.
Fixed iOS build
Bump lua to fix issue with UTF8 strings.
Bumped Lua 5.2.3
Update version to 1.3.0
Bump Lua