Add basic api unit. This unit will be responsible for providing all stf restful apis.

lib/units/api/index.js

@@ -0,0 +1,27 @@
+var http = require('http')
+var path = require('path')
+
+var express = require('express')
+var SwaggerExpress = require('swagger-express-mw')
+
+var logger = require('../../util/logger')
+
+module.exports = function(options) {
+  var log = logger.createLogger('api')
+    , app = express()
+    , server = http.createServer(app)
+
+    var config = {
+      appRoot: __dirname
+    , swaggerFile: path.resolve(__dirname, 'swagger', 'api_v1.yaml')
+    };
+
+    SwaggerExpress.create(config, function(err, swaggerExpress) {
+      if (err) { throw err; }
+
+      swaggerExpress.register(app);
+    })
+
+    server.listen(options.port)
+    log.info('Listening on port %d', options.port)
+}