Fix init.rb for plugins
Make a note of why a helper exists
Allow no-arg call to pulse to default to /pulse
Refactorings of PulseController

Reads a lot better for determining which adapters are supported.

Also adds support for sqlite3, and fixes check for postgresql.
Updated docs to reflect known working adapters, document no-arg call to pulse, and some love for technicalpickles
Protect everything, so they can't become actions
Whitespace