Merge pull request #93 from pwschmidt/master

Latest improvements from ObjectiveCMIS library
Updated AlfrescoLog class and tests.
Replaced all occurrences of NSLog() and log() with AlfrescoLog.
Merge pull request #94 from pwschmidt/master

Latest changes from ObjectiveCMIS lib clean up
Merge pull request #95 from pwschmidt/master

MOBSDK-299
Merge branch 'master' of https://github.com/Alfresco/alfresco-ios-sdk into topic-log
Merge pull request #96 from pwschmidt/master

MOBSDK-525: base64 encoded streaming
Updated Samples app to use latest library and added a global "Log Level" setting to the app, accessed via the iOS Settings app.
Merge branch 'master' of https://github.com/Alfresco/alfresco-ios-sdk into topic-log
Set CMISLog to same log level as AlfrescoLog during session creation.
Added latest SDK to samples apps.
Log tests now remember and rest log level between tests.
Reset TEST_AFTER_BUILD setting.
Merge pull request #97 from gavincornwell/master

MOBSDK-459: Provide logging utility
MOBSDK-516: additional methods on DocFolder service; MOBSDK-527, SDK version set to 1.1.0
Merge branch 'master' of https://github.com/Alfresco/alfresco-ios-sdk. Conflicts resolved