Merge pull request #5 from spaceone/master

circuits.web code cleanup; little fix when a http status code is not defined in HTTP client
Updated dev requirements
Bring back the Exception Event type and use this for critical uncaught exceptions. Fixes Issue #77
Only call event.stop() when we actually handle the request and return a response. Let the request event pass through otherwise. Fixes Issue #81
Code cleanup
Add broadcast event for UDP sockets
Add UDP support to telnet example via -u/--udp option
Merged in prologic/circuits (pull request #12)

Fixes Issue #77 -- Bringing back ``Exception`` Event type.
Merged in prologic/circuits (pull request #13)

Only call event.stop() when we actually handle the request and return a response. Let the request event pass through otherwise. Fixes Issue #81
Add notice about where we got the HTTP parser code from
Added comments to dev requirements
Fixed incorrect no. of args passed to HttpParser
Added documentation for circuits.tools. Fixes Issue #75
Fixed typos. See Ixxue #75
Merged with 29995b382b99
Added roadmap to Documentation listing high level goals and linking to specific issue tracker milestones
Use a convention of naming the methods of event handlers after their function, not the name of the event they handle. Fixes Issue #70
Fixed some typos. See Issue #70
Added note about when @handler(False) makes sense. See Issue #70
Added: Missing unit test for DNS lookup failures. Fixes Issue #76