Refactor API key to the module

[excid3]

What are your thoughts on changing this:

find = InfoconnectWrapper::FindCompany.new
key = '' #your api key..."
find.init(key)
company = find.find_by_name('Infogroup', 'Papillion', 'NE', 'Enhanced')

To this:

# config/initializers/infoconnect.rb
InfoconnectWrapper.api_key = "YOUR_API_KEY"

# inside your app
company = InfoconnectWrapper::FindCompany.new.find_by_name("Infogroup", "Papillion", "NE", "Enhanced")

Unless you've got the need to change the key each request, I'd propose setting it up this way. Happy to do a PR for it as well.

[creativereason]

Great idea. I was exhausted when I put this together and knew I was overlooking some easy stuff.