Release 0.2.0

Since the 0.1.0 release, we have made a great work on the stability, performances and bug fixes.
This release also includes a lot of work for the CentralReport security, big changes have been made on its integration on operating systems.

We are working on the communication between the application and centralreport.net for a next release.

__All commits made since the 0.1.0 version:__
https://github.com/CentralReport/CentralReport/compare/master...release-0.2.0

## New features
- [x] [#27](https://github.com/CentralReport/CentralReport/pull/27) - Added ```cr.system``` module
- [x] [#40](https://github.com/CentralReport/CentralReport/pull/40) - Added ```NEWS``` file
- [x] [#44](https://github.com/CentralReport/CentralReport/pull/44) - Improved security and integration on operating systems
- [ ] ~~[#52](https://github.com/CentralReport/CentralReport/pull/52) - Communication with [centralreport.net](http://centralreport.net) - Webservices~~
- [x] [#59](https://github.com/CentralReport/CentralReport/pull/59) - The log level can be personalized in the configuration file

## Major improvements
- [x] [#25](https://github.com/CentralReport/CentralReport/pull/25) - Improved install and uninstall
- [x] [#30](https://github.com/CentralReport/CentralReport/pull/30) - Updated Bootstrap from 2.2.1 to 2.3.0
- [x] [#33](https://github.com/CentralReport/CentralReport/pull/33) - Improved log functions
- [x] [#38](https://github.com/CentralReport/CentralReport/pull/38) - PEP 8 refactors (code cleaning)
- [x] [#45](https://github.com/CentralReport/CentralReport/pull/45) - Added ```printBox``` function in bash
- [x] [#48](https://github.com/CentralReport/CentralReport/pull/48) - Updated data collectors
- [ ] ~~[#58](https://github.com/CentralReport/CentralReport/pull/58) - Can now detect if it's a CentOS or Arch Linux~~

## Major fixes
- [x] [#39](https://github.com/CentralReport/CentralReport/pull/39) - Improved install dev tools
- [x] [#50](https://github.com/CentralReport/CentralReport/pull/50) - Removed "readme.md" file (duplicated content)
- [x] [#60](https://github.com/CentralReport/CentralReport/pull/60) - Fixed project URLs

~~Striped PR~~ will be available in a next release.