Code formatting

Readme.md

@@ -9,23 +9,26 @@ Cellxgene Gateway allows you to use the Cellxgene Server provided by the Chan Zu
     python --version
 
 1. Set up a venv with
-
+```
     python -m venv .cellxgene-gateway
     source .cellxgene-gateway/bin/activate
+```
 
 2. Install requirements with
-
+```
     pip install -r requirements.txt
-
+```
 3. Prepare a folder with .h5ad files, for example
 
+```
     mkdir cellxgene_data
     wget https://github.com/chanzuckerberg/cellxgene/raw/master/example-dataset/pbmc3k.h5ad -O ../cellxgene_data/pbmc3k.h5ad
+```
 
 4. Copy run.sh.example to run.sh:
-
+```
      cp run.sh.example run.sh
-
+```
 `run.sh` defines various environment variables:
 
 * DEPLOYMENT_ENV - expects 'dev', 'tst' or 'prd'