I was working on a RAML 1.0 to Postman collections generator. Postman is also going through some changes.. they have a new 2.0 format for collections that is now in Postman, but the Postman UI is not yet using it. Basically it will allow for unlimited folders and some other niceties. Time is always the killer for many of these ideas though... life gets in the way! I hope to continue working on it soon, as I would love to see a way to generate Postman collections from RAML API definitions.. or offer a way to make it easier to build Postman collections with RAML import or something.