initial commit
tango: initial add
travis.yml: initial add
makefile: initial add
tango.Route: recover from any user errors
tango.Route: dont return json in the main route function
tango.JsonEndpoint: allow users to speficy the type a key should be
tango.JsonEndpoint: return the interface back to the main route
tango: support cookies within request context
tango: use init() to initialize data