Create RenewGitToken.md

Author: jmgasper

RenewGitToken.md

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+## Revoking and renewing a login token
+
+#### Revoke
+
+To revoke a token:
+
+1.  Click your username in the upper-righthand corner of the page
+2.  Select the `Settings` option
+3.  You will see `Github` and `Gitlab` listed
+4.  Click `Revoke` next to each and confirm the action on the confirmation popup
+5.  The checkmark or warning icon and `Revoke` button next to `Gitlab` or `Github` will turn to a `Setup` button
+
+
+
+#### Add a token
+
+Once the token(s) are revoked, you can add them again by clicking the `Setup` button next to the Git provider.  This will walk you through the flow to reauthorize.