Moves webhook to webhooks/incoming
Adds Pry gem for testing
Renames Slackr::Webhook to Slackr::IncomingWebhook
Updates Incoming spec to use new rspec expect syntax
Adds Connection class
Moves specs around
Adds notes
Updates specs after separation of concerns
Adds backwards compatibility
Bugfix: corrects url used in Webhook request
Adds deprecation warning to Slackr::Webhook initializer
Merge branch 'master' into test_coverage

Conflicts:
	lib/slackr/webhook.rb
	spec/webhook_spec.rb
Adds changes from pull/1 that didn't make the merge
Add default to options
Returns self from Connection#init
Merge pull request #2 from risk-io/test_coverage

Test coverage