Initial check-in of sample

Implementation complete.  Needs driver code, testing and documentation.
Changed postbuild script and install script
Added WiX installer project to solution to generate Installable package for cmdlets
Created UI, added Apache license, referred to project output
Deselected Setup project to not be included in the default build configuration of the solution
Driver code and documentation complete
Fixed so that the installer will request elevated permissions
Bug fixes for Corporate events app
Merge remote-tracking branch 'contributor/setup' into dev
Small changes to documentation to point out the requirement for the wix tooling
Merge remote-tracking branch 'contributor/samples-new' into dev
Small documentation updates
Added readme in
Merge branch 'dev' of https://github.com/officedev/pnp into dev
Fixed data initializer and made enhancements to create default Wiki page
Merge
Added option to obtain a ClientContext using username/pwd for a SAML secure SharePoint site
Merge branch 'dev' of https://github.com/OfficeDev/PnP into dev
Creating documentation for the Corporate Events app
Merge branch 'dev' of https://github.com/OfficeDev/PnP into dev