Merge pull request #43 from elgreco84/master

Updated properties on CKIPage
CKIFolder wasn't parsing context related paramters
Merge pull request #44 from nlambson/master

CKIFolder wasn't parsing context related paramters
Tweak slightly the path for folders/files
Merge pull request #45 from derrh/master

Tweak slightly the path for folders/files
Fixed the key for Web Conferences.

The API documentations is a lie.
Merge pull request #46 from jarsen/master

Fixed the key for Web Conferences.
Add support for fetching single discussion with topic id
Merge pull request #47 from nlambson/master

Add support for fetching single discussion with topic id
Remove keychain from canvaskit

We really shouldn't be asserting opinions about the keychain
in our networking library. Clients can handle this on their own
if they want.
Merge remote-tracking branch 'instructure/CanvasKit/master'
Add logout functionality

lets the client tell the server to reject the
current access token.
update readme
Make logout set accessToken and user to nil.
remove clientID from header
Add private currentUser property
stop retaining modal web view

this caused bugs if you would ever logout and try logging back in again.
Merge pull request #48 from jarsen/master

Remove Keychain Schema + More
reset the client when server revokes token

it's possible for the server to revoke an access token
when this happens, the CKIClient will now detect it and set the
authToken and currentUser to nil.
Merge pull request #49 from jarsen/master

reset the client when server revokes token