cowboy0.9.0: replace cowboy 0.8.4 with 0.9.0
cowboy-0.9.0: update deps ranch and cowlib
cowboy-0.9.0: start cowlib application
cowboy-0.9.0: updated makefile
list_call_restirction_flags_sup
simplification
KAZOO-2281: Correct pvt_doc to pvt_code
Merge pull request #296 from 2600hz/cowboy-0.9.0

Cowboy 0.9.0
master: add cURL samples for CDRs
slow_login: add bucket naming to modules util
slow_login: silence erlydtl warnings in cb_signups
slow_logins: move bucket name to modules util
slow_logins: add expensive token consumption when validating user auth
slow_logins: remove logging, formatting
slow_logins: update types for setter funs in cb_context
slow_logins: fix binding call
slow_logins: formatting fixes
slow_logins: fix specs, use atoms in view option keys
slow_logins: cleanup ip auth, add token cost to api_auth
Merge pull request #299 from 2600hz/KAZOO-2281

KAZOO-2281: Correct pvt_doc to pvt_code