formatting + added resulting files

ca/README.md

@@ -1,13 +1,15 @@
 ## CSR > pkcs12 certificate
 
 
-1. Generate CSR and private key
-`openssl req -nodes -new -newkey rsa:2048 -sha256 -out csr.pem`
-Results in: csr.pem, privkey.pem
+1. Generate CSR and private key using OpenSSL (resulting files: `csr.pem`, `privkey.pem`)
+```
+openssl req -nodes -new -newkey rsa:2048 -sha256 -out csr.pem
+```
+
+2. Submit `csr.pem` to CA, e.g. [CAcert](https://www.cacert.org/) and obtain signed certificate (resulting file: `cert.pem`)
 
-2. Submit `csr.pem` to CA and obtain `cert.pem`
 
-3. Bundle cert.pem and privkey.pem into pkcs12
+3. Bundle cert.pem and privkey.pem into pkcs12 (resultig file: `certificate.pfx`)
 ```
 openssl pkcs12 -export -out certificate.pfx \
 -inkey privkey.pem \