add topics

topics/c++/index.yml

+---
+display_name: C++
+topic: c++
+selected: true
+aliases: 'c++'
+description: 'C++ is a general purpose and object-oriented programming language.'
+website: 'https://isocpp.org/'
+logo: 'https://github.com/github/explore/blob/master/topics/cpp/cpp.png?raw=true'
+---

topics/go/index.yml

+---
+topic: go
+aliases: 'golang, golang-examples'
+display_name: Go
+website: 'http://golang.org'
+description: 'Go is a programming language built to resemble a simplified version of the C programming language.'
+blog: 'https://blog.golang.org/'
+logo: 'https://github.com/github/explore/blob/master/topics/go/go.png?raw=true'
+selected: true
+  ---

topics/html/index.yml

+---
+display_name: Html
+topic: html
+selected: true
+aliases: 'html'
+description: 'HTML is the fundamental markup language for webpages.'
+website: 'https://www.w3.org/html/'
+logo: 'https://github.com/github/explore/blob/master/topics/html/html.png?raw=true'
+---

topics/java/index.yml

+---
+display_name: Java
+topic: java
+selected: true
+aliases: 'java'
+description: 'Java was originally developed as an alternative to the C/C++ programming languages. It is now mainly used for building web, desktop, mobile, and embedded applications. Java is owned and licensed through Oracle, with free and open source implementations available from Oracle and other vendors.'
+website: 'https://www.oracle.com/technetwork/java/javase/overview/index.html'
+blog: 'https://en.wikipedia.org/wiki/Java_(software_platform)'
+---

topics/js/index.yml

+---
+topic: js
+display_name: JavaScript
+aliases: 'javascript'
+selected: true
+website: 'http://www.javascript.com'
+description: 'JavaScript (JS) is a lightweight interpreted programming language with first-class functions.'
+blog: 'http://blog.js.com'
+logo: 'https://github.com/github/explore/blob/master/topics/javascript/javascript.png?raw=true'
+---

topics/php/index.yml

+---
+topic: php
+display_name: Php
+aliases: php
+selected: true
+website: 'http://www.php.com'
+description: 'php topic description'
+blog: 'http://blog.php.com'
+---

topics/ruby/index.yml

+---
+topic: ruby
+aliases: 'ruby on rails, rails, ror'
+display_name: Ruby
+website: 'http://rubyonrails.com'
+description: 'Ruby is a scripting language designed for simplified object-oriented programming.'
+blog: 'http://rubychina.com'
+logo: 'https://github.com/github/explore/blob/master/topics/ruby/ruby.png?raw=true'
+selected: true
+---