OpenRosa Request Middleware
Very simple middleware to check for OpenRosa headers on a request and add OpenRosa headers to a response in an Express app, as defined by https://bitbucket.org/javarosa/javarosa/wiki/OpenRosaRequest
Usage
var OpenrosaMiddleware = ; app;
Note that it exports a factory that creates the middleware when invoked.
pass options = {strict: false}
to ignore request headers