protect against null
first on binary
Update README.md
adding jacoco
update test
assertJ version
final class for utility class
binary work on find
make binary works
resolve jongo bug for saving id as string
rename function
ignore for now
correctly handle DBRef
add contributor
Merge branch 'master' into binary

Conflicts:
	README.md
	src/main/java/com/github/fakemongo/impl/ExpressionParser.java
	src/main/java/com/github/fakemongo/impl/Util.java
	src/main/java/com/mongodb/FongoDBCollection.java
	src/test/java/com/github/fakemongo/impl/ExpressionParserTest.java
Merge pull request #9 from mathieubodin/master

Ensure DBRef have DB set.
formating
Merge branch 'master' into binary
Merge remote-tracking branch 'twillouer/binary'
update dependenciez