Merge pull request github#122 from github/sensitive-data-removal-poli…

…cy-update-summer-2018

Update github-sensitive-data-removal-policy.md

Merge pull request github#110 from github/minor-edits-and-formatting-…

…spring-2018

Minor edits and formatting

Merge pull request github#88 from github/github-minor-update-october-…

…2017

Adding updates

Replacing capitalized "Users" from previous version