Fix find_or_create_by deprecations in Rails 4

Also maintain compatibility w/ older rails. Fixes #157.
Merge pull request #182 from aaronjensen/feature/fix-rails4-deprecations

Fix find_or_create_by deprecations in Rails 4
Bump version.
Include  in blacklist for autoconnect.

Fixes bug pointed out by @sergiopatricio in https://github.com/assaf/vanity/commit/1cdafa27d03c7b89aa4d918ac6265799bd094212#commitcomment-5198718
Add example vanity.yml's to README.
Add grace period to Vanity::Metric updated_at

Avoids database wait locks in highly-concurrent environments
Merge pull request #188 from stangel/patch-1

Add grace period to Vanity::Metric updated_at
Adding timestamps to vanity_participants

Not creating tests because these timestamps are basic ActiveRecord magic.

For those who've already run the vanity generator and resulting
migration and who wish to leverage timestamps, they'll need to add the
following to their migrations:

class AddTimestampsToVanityParticipants < ActiveRecord::Migration
  def self.up
    change_table :vanity_participants do |t|
      t.timestamps
    end
  end
  def self.down
    remove_column :vanity_participants, :created_at
    remove_column :vanity_participants, :updated_at
  end
end
Merge pull request #190 from inkredabull/feature/timestamps_for_vanity_participants

Adding timestamps to vanity_participants
Use sqlite3 for all active record adapter tests.

* should increase speed with in-process database
* reduce number of adapters tested (active record is active record is active record, in theory)
* fixes travis killing off threads due to high cpu/memory usage on mysql testing
Merge pull request #192 from assaf/bugfix/timestamps-fix

Use sqlite3 for all active record adapter tests.
Add helper false to controller generator command.

* Closes #191.
Fix ActiveRecord sqlite3 testing, need to ensure connection.
Fix ActiveRecord participant retrieval with non-primitive identities.

* Reported in #177, identities of non-primitive objects may be recorded differently than they are later searched for.
Ensure options are passed through Object#track!

* Useful for Rack integrations of Vanity.
* Closes #177.
Clean up various whitepace and comments.
Remove duplicated dashboard docs in favor of README.

Closes #197.
Replace instance variables with locals to fix CLI.

* Updates tests to check for conditionals on page.
* Closes #196.
Replace js encoding with server-side call.

Closes #193.
Add test for re-using existing redis connection.