Merge pull request #149 from swiftype/master

Multiple database support for Mongoid 3
updates History, prepping for 0.9 release
releases v0.9.0
releases 0.9.1 with fixed gemspec
Use correct SQLite3Adapter superclass in Rails 4 while preserving Rails 3 compatibility
Use markdown instead of textile to the README file

With github flavored markdown the README file becomes
more legible and beautiful mainly the code examples
Merge pull request #154 from MarceloCajueiro/master

Improve the README file using markdown
Model has more priority over connection_hash

* Skip load_config for ActiveRecord if model set for strategy.
* If model and connection_hash are set, then should return model as connection_class instead of connection_hash builder
Merge pull request #157 from jetthoughts/master

Model should have more priority over connection_hash for connection_class
Change table names returned by Sequel from symbols to strings when truncating
Merge pull request #158 from Lauri/sequel_string_tables

Sequel returns table names as symbols, DatabaseCleaner expects strings
Bugfix to ActiveRecord PostgreSQLAdapter pre_count
Merge pull request #160 from jhollinger/master

Bugfix to ActiveRecord PostgreSQLAdapter pre_count
Travis: Add mongodb service
Merge pull request #161 from jnv/master

Fix Travis builds – add MongoDB service
Travis: Enable Ruby 1.9.3
Remove obsolete gems
Specs: Check for response to :truncate_table instead of string
Fixed SQLite truncation error "no such table: sqlite_sequence"

SQLite truncation assumes the "sqlite_sequence" table exists and fails
if it does not. Added private function `uses_sequence` to make sure the
table exists first
Merge pull request #163 from lightswitch05/master

Fixed SQLite truncation error "no such table: sqlite_sequence"