Merge pull request #234 from tmughal/master

Fallback implementations for includeVariables request on Public API
Update build scripts to generate both static library and framework distributions (release and debug)
Merge pull request #235 from mikeh/master

Update build scripts
Phase 1 of MOBDSK-674: Changed property names, swapped internal implementation of variable to a dictionary of AlfrescoProperty objects and change attachment methods to accept AlfrescoDocument instead of AlfrescoNode.
Removed AlfrescoWorkflowVariable class
Integrated changes from Taz and added checks for variable retrieval.
Final phase of MOBSDK-674: Introduced AlfrescoListingFilter onto AlfrescoListingContext then use this mechanism to filter processes by state.
Merge pull request #236 from gavincornwell/master

MOBSDK-674: Final phase of WorkflowService refactoring
Made the new AlfrescoListingFilter a public header and added it to the main SDK include file.
Merge pull request #237 from gavincornwell/master

Build fix
Workflow bug fixes
Updated Xcode version, clean up of project warnings
Workaround for MNT-10977