Add Installation section to README.md

- Added Installation section to README.md
- Removed old Usage section

README.md

@@ -4,6 +4,22 @@
 ### What is imgupload?
 imgupload is a Flask + uWSGI application to serve as an all-purpose image/file uploader over POST requests.
 
-### Usage
-Make sure you install the dependencies first. To do this, run `sudo python3 -m pip install -r requirements.txt`.
-To deploy imgupload, run `flask run`.
+### Installation
+1. Clone the repository: `git clone https://github.com/BBaoVanC/imgupload.git`
+2. Enter the imgupload directory: `cd imgupload`
+3. Create a virtualenv: `python3 -m venv env`
+4. Enter the virtualenv: `source env/bin/activate`
+5. Install dependencies: `python3 -m pip install -r requirements.txt`
+6. Run the Flask app
+
+### Running the Flask app
+## Using uWSGI
+[https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html](https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html)
+Instructions specific to imgupload are coming soon
+
+## Using Flask development server
+```shell
+$ source env/bin/activate  # if you haven't already entered the virtualenv
+$ export FLASK_APP=imgupload.py
+$ flask run
+```