Updated missed fix in AddHtmlToWikiPage

One of the AddHtmlToWikiPages wasn't updated;  also corrected a couple
comment blocks
removed commented out code in InformationManagementextension
Merge pull request #124 from pefilice/dev

Updated missed fix in AddHtmlToWikiPage
Checking in Excel.JsonToOfficeTable sample

Checking in Excel.JsonToOfficeTable sample
Merge branch 'dev' of https://github.com/OfficeDev/PnP into dev
Initial checkin of Excel.JsionToOfficeTable

Initial checkin of Excel.JsionToOfficeTable
Small documentation updates