Added a number of HTTP reponses.
Updated example to reflect the new API. Note that example doesn't work from within R.
Changed service to take name of function from URL route rather than as parameter. Allow for multiple methods called on same endpoint. Changed format of POSTs to be more canonical. Made call a function of `fun_env`.
Added multiple methods per endpoint.  Changed format to be more in line with other REST servers like this (bottle.py, express.js, ...)
Put old stuff in here.
Keeping up to date