uwsgi and installation added

README.md

-Initial commit
+# HPC&A IoT Server
+
+The server is written in Python using [Flask][flask] framework and run on [uWSGI][uwsgi] server.
+## Installation
+
+1. Create forder for the server 
+``` 
+$ mkdir hpca_iot 
+$ cd hpca_iot 
+``` 
+2. Clone the project 
+``` 
+$ git clone https://lorca.act.uji.es/gitlab/vrykov/thso.server/-/tree/dev 
+$ cd thso.server 
+```
+3. Run preinstallation script which will create virtual envoronment, install all necessary C libs and python dependencies, and export environment variables. 
+``` 
+$ sudo ./preset.sh 
+``` 
+
+Now the server is installed and ready for configuration.
+
+## Configuration
+
+There are 3 types of configuration: environment, application and server. The environment can be production, 
+development and testing. The server can run completely differently for each environment depending on your 
+confuguration respectievely. The default environment is 'production'. ('production' environment requires for https and 
+certificate precence for secure session management. If don't have, change to development environemt, which does not 
+use encryption for session data). 
+``` 
+$ export FLASK_ENV=production 
+$ export FLASK_ENV=development 
+$ export FLASK_ENV=test 
+``` 
+
+The application configuration is basically describes database connection and other parameters as 
+secure cookies or debug mode. On the other hand you have server (uWSGI) configuration which is located in 
+app/server.ini. In this file you can define concurrency parameters as how many processes and threads will be used by 
+the server or on which port it will be listening. For more information refer to [this link][uwsgiconf].
+
+## Running
+
+To run the server execute next command 
+``` 
+thso.server/app $ uwsgi aserver.ini 
+``` 
+
+[flask]: <https://flask.palletsprojects.com/en/1.1.x/> 
+[uwsgi]: <https://uwsgi-docs.readthedocs.io/en/latest/> 
+[uwsgiconf]: <https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html>