Fix> Change some parts of readme (texts)

Readme.md

@@ -7,7 +7,10 @@ You can see demo in https://demo.kaajavi.com/
 If you want to see the admin panel, 
 the default email is `admin@admin.com` and their password is `admin`
 
+
+
 ## Setup
+This application was developed with python 3.8
 
 The first thing to do is to clone the repository:
 
@@ -19,7 +22,7 @@ $ cd BelvoApp
 Create a virtual environment to install dependencies in and activate it:
 
 ```sh
-$ virtualenv2 --no-site-packages env
+$ virtualenv --no-site-packages env
 $ source env/bin/activate
 ```
 
@@ -29,7 +32,7 @@ Then install the dependencies:
 (env)$ pip install -r requirements.txt
 ```
 Note the `(env)` in front of the prompt. This indicates that this terminal
-session operates in a virtual environment set up by `virtualenv2`.
+session operates in a virtual environment set up by `virtualenv`.
 
 Once `pip` has finished downloading the dependencies:
 ```sh
@@ -43,20 +46,21 @@ The home page is the API documentation.
 
 ## What do you need know about the challenge
 
-I remove the session authentication and I didn't set up the authentication by JWT
+I removed the session authentication and I didn't set up the authentication by JWT
 or similar token, so the API is open for everybody.
 
 
 ## To run in docker-compose
 
-I suppose you have installed docker and docker-compose. If not, try with [here](https://docs.docker.com/compose/install/)
+I suppose you have installed docker and docker-compose. If not, try [here](https://docs.docker.com/compose/install/)
 
 Run:
 ```sh
 $ docker-compose up
 ``` 
 and server runs in development mode.  
-After run, the command call db migrates, create superuser if not exists and run server in **8080 port**.
+When docker-compose runs, call commands for DB migrations, 
+create superuser if not exists, and then run the server in **8080 port**.
 
 ## Tests
 
@@ -64,4 +68,8 @@ To run the tests, `cd` into the directory where `manage.py` is:
 ```sh
 (env)$ python manage.py test users
 (env)$ python manage.py test transactions
+```
+or for all:
+```sh
+(env)$ python manage.py test
 ```