Added MongocCursor wrapper class to mongo_common.cpp/.h
experimenting with PHP associative array to BSON translation
[WIP] creating cursor using mongoc_client_get_collection and mongoc_collection_find
cursor constructor and test
Representing db_name and collection_name using C++ String
Implemented hasNext/next/getNext/rewind C++ methods in MongoCursor
fixed merge conflict with current master
Merge pull request #13 from 10gen-labs/gh11-mongocursor

MongoCursor constructor and hasNext/next/getNext/rewind methods