Merge pull request #99 from gavincornwell/master

MOBILE-459 and MOBSDK-379
CMIS error mapping moved to AlfrescoCMISUtil (MOBSDK-526), MOBSDK-527 fixed
Merge branch 'master' of https://github.com/Alfresco/alfresco-ios-sdk
added a unit test for very small files to upload (2 bytes). (Same test is also in the CMIS lib)
Merge pull request #100 from pwschmidt/master

MOBSDK-526/527