Update checkintool.md

Fixed a couple minor typos
Update list-remote-branches.md

Fixed some grammar issues
Merge pull request #668 from coryhouse/patch-2

Update list-remote-branches.md
Merge pull request #667 from coryhouse/patch-1

Update checkintool.md
Being able to clone TFS path "$/"
Prevent using 'branch' command when cloned whole repository