Clean up some xml comments
Merge pull request #56 from xt0rted/patch-1

Clean up some xml comments
Added developmentDependency tag so TinyIoC is excluded when doing `nuget pack`
Merge pull request #58 from khellang/patch-1

Added developmentDependency tag
Can mark classes as internal via a TINYIOC_INTERNAL conditional compilation symbol.
Merge pull request #59 from damianh/tinyioc_internal

Can mark classes as internal