Parsing of connection string URI
Invalid uri in first test
Added MongoCollection::ASCENDING + MongoCollection::DESCENDING constants
Made all exception classes extend MongoException
Merge pull request #54 from rexxars/exception-inheritance-fix

Make all exception classes extend MongoException
Merge pull request #53 from rexxars/collection-constants

Added MongoCollection::ASCENDING + MongoCollection::DESCENDING constants
Tests for Connection String URI parsing
Merge pull request #52 from nantunes/connection-uri

Parsing of connection string URI
MongoClient implementation tasks #32:
listDBs
MongoClient implementation tasks #32:
listDBs

Added a small test :)
Merge pull request #55 from MblKiTA/master

MongoClient implementation tasks #32:
Added PHP 5.6 to Travis.
Merge pull request #57 from h4cc/patch-1

Added PHP 5.6 to Travis.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/MongoClient.php
do not re-declare $db in MongoGridFS because it already extends MongoCollection. test was broken
fix MongoClient tests to not rely on the unsupported public $server variable. add test for getHosts() method
fix MongoCollection::group test to match the actual spec
add comment about pfsockopen not working with tests