iOS Simulator can now access the keychain
Fix check for Dropbox URL scheme
Merge pull request #950 from sdarlington/dropbox-urlscheme

Fix check for Dropbox URL scheme
Merge pull request #951 from sdarlington/keychain-simulator

iOS Simulator can now access the keychain
BUGFIX: fixes #947. Only fixes crash, not a root cause, which stays unknown.
Merge branch 'master' of https://github.com/ShareKit/ShareKit into readly