add twilio capability

lib/apis.js

@@ -318,6 +318,7 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
         var _stripe_test;
         var _mandrill;
         var _mailchimp;
+        var _twilio;
         myApp.use('/', function preHandler(req, res, next) {
           return getSiteConfig(clientUrih).then(function (siteConfig) {
             Object.defineProperty(req, 'getSiteMailer', {
@@ -429,6 +430,27 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
               }
             });
 
+            var caps = {
+              'com.daplie.tel.twilio': function (/*opts*/) {
+                if (_twilio) {
+                  return _twilio;
+                }
+
+                var Twilio = require('twilio');
+                _twilio = new Twilio.RestClient(siteConfig['twilio.com'].id, siteConfig['twilio.com'].auth);
+                return apiDeps.Promise.resolve(_twilio);
+              }
+            };
+            req.getSiteCapability = function (capname, opts) {
+              if (caps[capname]) {
+                return caps[capname](opts);
+              }
+              return apiDeps.Promise.reject(
+                new Error("['" + req.clientApiUri + '/' + pkgId + "'] "
+                  + "capability '" + capname + "' not implemented")
+              );
+            };
+
             req._walnutOriginalUrl = req.url;
             // "/path/api/com.example/hello".replace(/.*\/api\//, '').replace(/([^\/]*\/+)/, '/') => '/hello'
             req.url = req.url.replace(/\/api\//, '').replace(/.*\/api\//, '').replace(/([^\/]*\/+)/, '/');