update referenced file name due to change with serverless offline upgrade (#2)

Author: justin.kruse

index.js

@@ -13,7 +13,19 @@ const evalInContext = require('./eval')
 const createMQTTBroker = require('./broker')
 // TODO: send PR to serverless-offline to export this
 const functionHelper = require('serverless-offline/src/functionHelper')
-const createLambdaContext = require('serverless-offline/src/createLambdaContext')
+let createLambdaContext;
+
+try {
+    createLambdaContext  = require('serverless-offline/src/createLambdaContext');
+} catch (e) {
+    try {
+        // latest serverless-offline changed the file name
+        createLambdaContext = require('serverless-offline/src/LambdaContext');
+    } catch (e2) {
+        throw new Error('Unable to find LambdaContext file');
+    }
+}
+
 const VERBOSE = typeof process.env.SLS_DEBUG !== 'undefined'
 const defaultOpts = {
   host: 'localhost',