Support Vert.x environment

[jlouvel]

Consider support of Restlet API within Vert.x environments. See discussion:
http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=3058658

See also integration with RxJava:
https://github.com/vert-x/mod-rxvertx

[jlouvel]

This could become and addition Restlet edition as suggested by Pieter Martin

[jlouvel]

See Javadocs of HTTP package:
http://vertx.io/api/java/index.html?org/vertx/java/core/http/package-summary.html

and of the web server module:
https://github.com/vert-x/mod-web-server

[jlouvel]

@pietermartin Your Lavabit email bounced, so I thought you might be interested in this follow-up message: http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=3075581

[pietermartin]

@jlouvel Great stuff. Kinda forgotten about vert.x as I was not prepared to go without restlet.
Will have a look at what you have done.