Xtcryptosignals

Built 3 web pages to show platform functionalities in the following URLs:

* `/ticker/<exchange>/<pair>/<frequency>`
* `/ticker/<pair>/<frequency>`
* `/ticker/<frequency>`
* `/ticker`

Added first working version of Web Server API and Web page.
Implemented SocketIO.
Added --version argument to display current version of the tool.
Updated section Roadmap in `CHANGELOG.md`.
Added more help in `README.md`.

Added command line help support.
Added more help in `README.md`.

Fixed `README.md`.

Added collection of data for any configured crypto-currency (coin or token) in
the following exchanges:

* Bithumb
* Coinbene

Bug fixing.
Changed `settings.py`.
Published it on PyPI.

Added collection of data for any configured crypto-currency (coin or token) in
the following exchanges:

* OkCoin

Added `MANIFEST.in`.
Bug fixing.