CMIS-823: Apps that use the ObjectiveCMIS static library crash when attempting to use the browser binding

The reason was the NSDictionary category being declared in it's own file. I've moved the category to a new CMISDictionaryUtil class and defined a helper method that is used by the library, this is enough to get the category loaded.

git-svn-id: https://svn.apache.org/repos/asf/chemistry/objectivecmis/trunk@1611607 13f79535-47bb-0310-9956-ffa450edef68
Updated release script to use version number defined in ObjectiveCMIS/ObjectiveCMIS.xcconfig

Also updated CMISReachability to match library coding standards.

git-svn-id: https://svn.apache.org/repos/asf/chemistry/objectivecmis/trunk@1611614 13f79535-47bb-0310-9956-ffa450edef68