Couchbase Lite Beta 3 32-bit Pod Spec

This brings in the Couchbase Lite Beta 3 for 32-bit.  It brings in the 32-bit version of both "CouchbaseLite.framework" and "CouchbaseLiteListener.framework".  A separate 32-bit version is needed to support Xcode 4.

This issue is currently prohibiting bringing in the 64-bit version https://github.com/CocoaPods/Specs/issues/9710.  Once resolved the 64-bit version can be brought in with a separate PR.