Updated dependency to jackson 2.3.2 and bson4jackson 2.3.1. Modified MongoAnnotationIntrospector and BsonObjectGenerator accordingly.
Updated dependency to jackson 2.3.2: removed deprecated methods, added findNameForSerialization and findNameForDeSerialization replacements
updated .gitignore
updated gitignore
updated contributor information
applied mongojack-format.xml code style to files within my change set only.
Merge pull request #49 from yunspace/feature/upgrade_jackson_and_bson4jackson

Feature/upgrade jackson and bson4jackson