Add a nodejs script to patch the project.json file with the AppVeyor version number

Former-commit-id: 547399af66beb1b843ff0ef3d6540f8132ffaab1
Former-commit-id: ba3b2143364e06c45e662284cc134634451bbe5b
Former-commit-id: ab0b04b0e427d286d3611dd424fccda6138c3999

.gitignore

@@ -172,4 +172,7 @@ build/TestResult.xml
 *.db
 
 _site/
-.vs/config/applicationhost.config
+.vs/config/applicationhost.config
+
+**/node_modules
+**/node_modules/*

build/aspnet5-version.js

@@ -0,0 +1,12 @@
+var jsonfile = require('jsonfile');
+var util = require('util');
+
+var file = '../src/imageprocessor/project.json';
+var buildNumber = process.env.APPVEYOR_BUILD_NUMBER;
+
+jsonfile.readFile(file, function (err, project) {
+    project.version = buildNumber;
+    jsonfile.writeFile(file, project, {spaces: 2}, function(err) {
+        console.error(err);
+    });
+})

build/package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "jsonfile": "^2.2.3"
+  }
+}