diff --git a/README.md b/README.md
index 06d7f46..b9640c8 100644
--- a/README.md
+++ b/README.md
@@ -4,20 +4,28 @@ Dockerized **[duplicity](http://duplicity.nongnu.org/)** backup tool.
 
 #### Backup to Google Cloud Storage example
 
-**WORK IN PROGRESS**
+**[Google Cloud Storage](https://cloud.google.com/storage/)** *nearline* [costs about $0.01/GB/Month](https://cloud.google.com/storage/pricing).
 
-[Google Cloud Storage](https://cloud.google.com/storage/) *nearline* [costs about $0.01/GB/Month](https://cloud.google.com/storage/pricing).
-
-Set up:
+**Set up**:
 
   1. [Sign up, create an empty project, enable billing, and create a *bucket*](https://cloud.google.com/storage/docs/getting-started-console)
-  2. Under "Storage" section > "Interoperability" tab > click "Enable interoperable access" and then "Create a new key" button and note both *Access Key*	and *Secret* (alternatively use [gcloud's `gsutil config -a`](https://cloud.google.com/storage/docs/getting-started-gsutil) to generate the `~/.boto` configuration file and mount it as `/home/duplicity/.boto`).
+  2. Under "Storage" section > "Interoperability" tab > click "Enable interoperable access" and then "Create a new key" button and note both *Access Key*	and *Secret*. Also note your *Project Number* (aka project ID, it's a number like 1233457890).
+  3. Run [gcloud's `gsutil config -a`](https://cloud.google.com/storage/docs/getting-started-gsutil) to generate the `~/.boto` configuration file and give it all these info (alternatively you should be able to set environment variable `GS_ACCESS_KEY_ID` and `GS_SECRET_ACCESS_KEY` however in my tries I didn't see where to set your project ID).
 
-Now you're ready to perform a backup:
+You should now have a `~/.boto` looking like:
 
-    $ docker run --rm --user $UID -v /:/data:ro -e PASSPHRASE=P4ssw0rd -e GS_ACCESS_KEY_ID=MYGOOGLEACCESSKEY -e GS_SECRET_ACCESS_KEY=SomeVeryLongAccessKey duplicity duplicity /data gs://my-bucket-name/some_dir
+    [Credentials]
+    gs_access_key_id = MYGOOGLEACCESSKEY
+    gs_secret_access_key = SomeVeryLongAccessKeyXXXXXXXX
+    
+    [GSUtil]
+    default_project_id = 1233457890
 
-To restore, you'll need:
+Now you're ready to perform a **backup**:
+
+    $ docker run --rm --user $UID -v /:/data:ro -v ~/.boto:/home/duplicity/.boto:ro -e PASSPHRASE=P4ssw0rd duplicity duplicity /data gs://my-bucket-name/some_dir
+
+To **restore**, you'll need:
 
   * Keep keys or regenerate them to access your Google Cloud Storage.
   * The `PASSPHRASE` you've used.
@@ -27,9 +35,9 @@ See also the [note on Google Cloud Storage](http://duplicity.nongnu.org/duplicit
 
 #### Backup to Google Drive example
 
-[Google Drive](https://drive.google.com/) offers [15GB for free](https://support.google.com/drive/answer/2375123).
+**[Google Drive](https://drive.google.com/)** offers [15GB for free](https://support.google.com/drive/answer/2375123).
 
-Set up:
+**Set up**:
 
  1. Follow notes [on Pydrive Backend](http://duplicity.nongnu.org/duplicity.1.html#sect20) to generate a P12 credential file (call it `pydriveprivatekey.p12`) and note also the associated service account email generated (e.g. `duplicity@developer.gserviceaccount.com`).
  2. Convert P12 to PEM:
@@ -37,11 +45,11 @@ Set up:
         $ docker run --rm -i --user $UID -v $PWD/pydriveprivatekey.p12:/pydriveprivatekey.p12:ro wernight/duplicity openssl pkcs12 -in /pydriveprivatekey.p12 -nodes -nocerts > pydriveprivatekey.pem
         Enter Import Password: notasecret
 
-Now you're ready to perform a backup:
+Now you're ready to perform a **backup**:
 
     $ docker run --rm --user $UID -v /:/data:ro -e PASSPHRASE=P4ssw0rd -e GOOGLE_DRIVE_ACCOUNT_KEY=$(cat pydriveprivatekey.pem) duplicity duplicity /data pydrive://duplicity@developer.gserviceaccount.com/some_dir
 
-To restore, you'll need:
+To **restore**, you'll need:
 
   * Regenerate a PEM file (or keep it somewhere).
   * The `PASSPHRASE` you've used.