Allow demongoization of strings to float

[ fix #3089 ]
make storage_options set the default on include
validate self class on store_in
add query counter helper to rspec
Add criteria aliases via alias_attribute.

[ close #3302 ]
Fix example in documentation to use the appropriate method.

The example for `update_all` used `update`.
Merge pull request #3307 from jpmckinney/patch-1

Fix example in documentation to use the appropriate method.
Merge pull request #3153 from dlibanori/issue-#3089

Allow demongoization of strings to floats
Update changelog
Fix small typo on spec
Fix binary bson new calls
point to latest bson-ruby
Update travis CI config

allow fail on jruby-head
remove email notification
add IRC notification
Merge pull request #3300 from mongoid/storage_options_thread

Small rework on storage options + validation