docs: add logo

Author: js2me

README.md

@@ -1,4 +1,7 @@
-# MobX ViewModel power for ReactJS  
+<div style="width: 100%; display: flex; align-items: center;">
+    <h2 style="margin-right: 20px; flex: 1">MobX ViewModel power for ReactJS</h2>
+    <img src="assets/logo.png" height="86" alt="logo" />
+</div>
 
 ## What package has   
 

assets/logo.png

@@ -4,7 +4,7 @@ postBuildScript({
   buildDir: 'dist',
   rootDir: '.',
   srcDirName: 'src',
-  filesToCopy: ['LICENSE', 'README.md'],
+  filesToCopy: ['LICENSE', 'README.md', 'assets'],
   updateVersion: process.env.PUBLISH_VERSION,
   onDone: (versionsDiff, _, packageJson, { targetPackageJson}) => {
     if (process.env.PUBLISH) {