Remove unused dev dependencies
Remove gemfile.lock file
Force rails 3.2 on tests for now
force minitest 4
add memcache-client back, as AR 3.2 need it
Allow fail on 2.1.0
Remove unused var
Add memcached AS store
Force exist? method to return a bool
Force key to ASCII 8BIT

Rails 4 dalli implementation forces the encode of the key.
Require all AS
Make Gemfile work with multiple versions
Make MemcachedSnappyStore use MemcachedStore
Remove memcache-client as we dont need it anymore
Remove some comments
More comments
Add multiple AS versions to travis
Allow failure on rails master

And not on ruby 2.1.0