fix: use platform agnostic approach to directory separators

Fix #164

dadi/lib/index.js

@@ -667,7 +667,7 @@ Server.prototype.updateCollections = function (collectionsPath) {

    // parse the url out of the directory structure
    var cpath = path.join(collectionsPath, collection)
    var dirs = cpath.split('/')
    var dirs = cpath.split(path.sep)
    var version = dirs[dirs.length - 3]
    var database = dirs[dirs.length - 2]

@@ -740,7 +740,7 @@ Server.prototype.updateEndpoints = function (endpointsPath) {
  endpoints.forEach(function (endpoint) {
    // parse the url out of the directory structure
    var cpath = path.join(endpointsPath, endpoint)
    var dirs = cpath.split('/')
    var dirs = cpath.split(path.sep)
    var version = dirs[dirs.length - 2]

    self.addEndpointResource({