add some chapters toc

chapters-en/google-map-solr.md

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+Solr + Google Map build polygon search
+===
+
+Overview
+---
+
+### Background
+
+### Showcase
+
+Steps
+---
+
+### Step 1: Solr Flask
+
+### Step 2: Google map Polygon
+
+Practise
+---

chapters-en/growth.md

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+A Code build Cross-platform application
+===
+
+Overview
+---
+
+### Background
+
+### ShowCase
+
+### Ionic & Electron & Cordova 
+
+Steps
+---
+
+### Step 1: Web to Hybird app, to desktop app
+
+### Step 2: responsive design
+
+### Step 3: platform specific code
+
+#### storage
+
+#### analytics
+
+#### auto-update
+
+#### desktop app
+
+### Step 4: future
+
+Practise
+---