Target pengwynn/pingwynn for stats specs

Octokit.rb has a rather large dataset, more than we need for testing so
I pointed the ion cannon at pengwynn/pingwynn to satisfy the Stats
specs.
Fix client secret filter for cassette recording
Merge pull request #410 from joeyw/target-pingwynn-for-stats-specs

Target pengwynn/pingwynn for stats specs
Merge pull request #411 from joeyw/fix-vcr-client-secret-filter

Fix client secret filter for cassette recording
Change basic_auth_client test helper to create new client each time.
Fix #update_authorization doc url fragment
Add #create_authorization doc link
Add basic_oauth_app_client test helper

Creates a client basic authenticated with OAuth App credentials
Add #check_authorization

Check OAuth application tokens
Add #revoke_authorizations
Add #revoke_authorization

Once upon a time there was an OAuth application owner with many happy
users. The sky was blue and the ocean was too and everyone was happy
until a user stepped on the owners shoe. The owner looked down and all
around but all he saw was a clown with a frown and then it was decided
the user must leave town. The user was frightful, very unlike how
delightful he was using the app, but the poor sap stepped on the owners
shoe and the owner didnt know what else to do. So it was, the owner
invoked the revoke_authorization method with the users token which made
it broken. The user tried to hide as he sighed and cried when his hopes
and dreams of using the app were denied. The end.