Update README

README.md

@@ -3,5 +3,74 @@
 [![Build Status](https://travis-ci.org/vinhnglx/gaea.svg?branch=develop)](https://travis-ci.org/vinhnglx/gaea)
 [![Coverage Status](https://coveralls.io/repos/github/vinhnglx/gaea/badge.svg?branch=develop)](https://coveralls.io/github/vinhnglx/gaea?branch=develop)
 
+ The application helps you search information relate to languages and technologies. Currently, this application just supports three sources: [StackOverFlow](http://stackoverflow.com/) - [RubyGems](https://rubygems.org/) - [Confreaks](http://confreaks.tv/) with simple features.
 
-Will update soon.
+I would like to develop this application become the powerful application like as *Gaea, a god in Greek mythology was the great mother of all.*
+
+**Here is my todo-list:**
+
+- Add more features for three sources, for example: paginates, search from tags, video, display more information for each result. I believe we will have more features when work with APIs of above sources.
+
+- Extend to more sources: StackExchange or Google services such as [Server Fault](http://serverfault.com/), [Super User](http://superuser.com/), [Ask Ubuntu](http://askubuntu.com/), [Google Youtube API](https://developers.google.com/youtube/) ...
+
+## Installation
+
+```
+$ gem install gaea
+```
+
+## Usage
+
+```
+Usage:
+  gaea looksfor
+
+Options:
+  -k, [--keyword=The keyword relate to contents you wanna search]
+  -s, [--source=The source - 3 default values: stackoverflow, gems and confreaks]
+  -y, [--year=The year - only avalaible with source confreaks]
+
+Search from multiple sources
+```
+
+### Search questions from StackOverFlow
+
+```
+gaea looksfor --keyword='activerecord' --source='stackoverflow'
+```
+
+![StackOverFlow](https://cloud.githubusercontent.com/assets/1997137/13025709/ac0291ca-d240-11e5-8c48-9c7a1c4ba179.png)
+
+### Search gems from RubyGems
+
+```
+gaea looksfor --keyword='hanami' --source='gems'
+```
+
+![RubyGems](https://cloud.githubusercontent.com/assets/1997137/13025718/f66bfc74-d240-11e5-972f-7087ee420163.png)
+
+### Search events from Confreaks
+
+#### All events in year
+
+```
+gaea looksfor --year='2015' --source='confreaks'
+```
+
+![Confreaks](https://cloud.githubusercontent.com/assets/1997137/13025738/4d4d36a2-d241-11e5-9c91-5de2bd06fbe4.png)
+
+#### All events relate to a language/technology in year
+
+```
+gaea looksfor --year='2015' --source='confreaks' --keyword='ruby'
+```
+
+![Confreaks](https://cloud.githubusercontent.com/assets/1997137/13025751/8f3ed200-d241-11e5-91a4-4e63604cc32c.png)
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/vinhnglx/gaea. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).