* 1384999, copy edits complete and article aligned with tempalte.
* 1384999, updated PNG to obfuscate user name.
* 1384999, incorporated FTE/Reviewer feedback.
* 1384999, added 'Tutorial' to the title in meta-data frontmatter.
* 1384999, removed 'SignalR with Web Apps' links as requested in a separate PR.
* 1384999, made the 'Prerequisites' section a bullet list.
* 1384999, fixed the optional feature in the prerequisite.
* 1384999, deleted will and 'll.
* 1384999, fixed date for formatting issue.
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