pep8 error fixes for __init__, auth, collection, schema_document, versioned_document
pep8 fixes
added support for MongoReplicaSetClient
fix some failing tests
merge
Merge pull request #140 from gulbinas/pep8-error-fix2

pep8 fixes
move listembed-test to the folder test
add mongodb support for travis
fix test_structure:test_missed_field
Merge pull request #141 from inabhi9/MongoReplicaSetClient-experiment

Support MongoReplicaSetClient (replica_set_connection is deprecated: http://api.mongodb.org/python/current/api/pymongo/replica_set_connection.html. Thanks to @inabhi9)
add backward support of ReplicaSetConnection