Updated DBSessionManager attribute

updated DBSessionManager attribute so it only calls closessession if
it's not a child action
Updated version number and nuspec files
updated nuspec files
added DependencyInjectionContainer

added a minimal implementation of DI container
Added missing tests for DI ServiceLocator
ignore files
updated gitignore
updated gitignore
Merge pull request #2 from adeel41/master

Added Dependency Injection Container